Error: [object Object] is not a PostCSS plugin After updating to Angular 11.1.0

[mrctrifork]

🐞 bug report

Affected Package

the application itself

Is this a regression?

Not a regression

Description

I updated my app from Angular 11.0.9 to Angular 11.1.0 because there was a bug with the HttpClient and now it doesn't compile

🔬 Minimal Reproduction

I ran

ng update @angular/cdk @angular/core @angular/cli @angular/material

Process finished successfully

And then tried to ng serve or ng build and yields the output below

🔥 Exception or Error

✔ Browser application bundle generation complete.

Error: ./src/main.ts
Module build failed (from ./node_modules/@ngtools/webpack/src/ivy/index.js):
NonErrorEmittedError: (Emitted value instead of an instance of Error) Error: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
    at Processor.normalize (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/processor.js:168:15)
    at new Processor (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/processor.js:52:25)
    at postcss (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/postcss.js:55:10)
    at Object.loader (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss-loader/dist/index.js:94:41)
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/webpack/lib/NormalModule.js:313:13
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:367:11
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:233:18
    at context.callback (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/@ngtools/webpack/src/ivy/loader.js:57:9
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
 @ multi ./src/main.ts main[0]

Error: ./src/polyfills.ts
Module build failed (from ./node_modules/@ngtools/webpack/src/ivy/index.js):
NonErrorEmittedError: (Emitted value instead of an instance of Error) Error: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
    at Processor.normalize (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/processor.js:168:15)
    at new Processor (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/processor.js:52:25)
    at postcss (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/postcss.js:55:10)
    at Object.loader (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss-loader/dist/index.js:94:41)
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/webpack/lib/NormalModule.js:313:13
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:367:11
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:233:18
    at context.callback (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/@ngtools/webpack/src/ivy/loader.js:57:9
    at processTicksAndRejections (internal/process/task_queues.js:93:5)
 @ multi ./src/polyfills.ts polyfills[0]

Error: ./src/bootstrap-grid.min.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
    at Processor.normalize (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/processor.js:168:15)
    at new Processor (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/processor.js:52:25)
    at postcss (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/postcss.js:55:10)
    at Object.loader (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss-loader/dist/index.js:94:41)
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/webpack/lib/NormalModule.js:316:20
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:367:11
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:233:18
    at context.callback (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
    at Object.loader (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss-loader/dist/index.js:103:7)
 @ multi ./src/assets/style/tailwind-out.css ./src/bootstrap-grid.min.css ./src/assets/style/styles.scss styles[1]

Error: ./src/assets/style/tailwind-out.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
    at Processor.normalize (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/processor.js:168:15)
    at new Processor (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/processor.js:52:25)
    at postcss (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss/lib/postcss.js:55:10)
    at Object.loader (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss-loader/dist/index.js:94:41)
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/webpack/lib/NormalModule.js:316:20
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:367:11
    at /Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:233:18
    at context.callback (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
    at Object.loader (/Users/miquel/AngularProjects/mit-evida/frontend/web/node_modules/postcss-loader/dist/index.js:103:7)
 @ multi ./src/assets/style/tailwind-out.css ./src/bootstrap-grid.min.css ./src/assets/style/styles.scss styles[0]

Error: ./src/assets/style/styles.scss
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin

🌍 Your Environment

Angular Version:

     _                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/
    

Angular CLI: 11.1.0
Node: 14.15.0
OS: darwin x64

Angular: 11.1.0
... animations, cdk, cli, common, compiler, compiler-cli, core
... forms, material, platform-browser, platform-browser-dynamic
... router
Ivy Workspace: Yes

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1101.0
@angular-devkit/build-angular   0.1101.0
@angular-devkit/core            11.1.0
@angular-devkit/schematics      11.1.0
@schematics/angular             11.1.0
@schematics/update              0.1101.0
rxjs                            6.6.3
typescript                      4.0.5

Anything else relevant?
Nothing else, can't build the app

[jerkovicl]

got the same error for HttpClient

[ghaschel]

I solved this by running:
rm -rf node_modules && npm cache clear --force && npm install

[petebacondarwin]

Yes, please try removing node_modules and reinstalling.

[jerkovicl]

@petebacondarwin i did that still same error HttpClient is not defined

[acalvo]

I'm having the same problem as OP, and neither npm ci nor rm -rf node_modules && npm cache clear --force && npm install solved it 😬

[petebacondarwin]

Please can one of you provide a reproduction that we can debug?

[mrctrifork]

I've removed node_modules, cleared npm's cache and reinstalled everything. Not fixed

[mrctrifork]

I have a strong belief that is due to the PostCSS update. Before Angular 11 used PostCSS 7 and now I've seen on my package-lock.json plenty of references to PostCSS 8.

I am freaking out a little bit because this error:

Is a PostCSS error when referencing the main.ts file

[jerkovicl]

@mrctrifork if you do npm i postcss -D that error will be gone atleast in my case but HttpClient is still not defined

[mrctrifork]

I confirm that running npm i postcss -D makes the error about PostCSS go away.
I have no injection errors in regards of the HttpClient.

[jerkovicl]

@petebacondarwin where can i send code for you to reproduce ?

[petebacondarwin]

@jerkovicl - I have emailed you at your protonmail account.

[jerkovicl]

@petebacondarwin yeah i sent app code to you, did you receive it?

[leonelvsc]

Same here, did you run tests before release ?, how can an error like this reach a release

``` Error: (webpack)-dev-server/client?http://0.0.0.0:0&sockPath=/sockjs-node Module build failed (from ./node_modules/@ngtools/webpack/src/ivy/index.js): NonErrorEmittedError: (Emitted value instead of an instance of Error) Error: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js): Error: [object Object] is not a PostCSS plugin at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15) at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25) at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10) at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41) at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:313:13 at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11 at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18 at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13) at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/@ngtools/webpack/src/ivy/loader.js:57:9 at runMicrotasks () at processTicksAndRejections (internal/process/task_queues.js:97:5)

Error: ./src/main.ts
Module build failed (from ./node_modules/@ngtools/webpack/src/ivy/index.js):
NonErrorEmittedError: (Emitted value instead of an instance of Error) Error: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:313:13
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/@ngtools/webpack/src/ivy/loader.js:57:9
at runMicrotasks ()
at processTicksAndRejections (internal/process/task_queues.js:97:5)

Error: ./src/polyfills.ts
Module build failed (from ./node_modules/@ngtools/webpack/src/ivy/index.js):
NonErrorEmittedError: (Emitted value instead of an instance of Error) Error: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:313:13
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/@ngtools/webpack/src/ivy/loader.js:57:9
at runMicrotasks ()
at processTicksAndRejections (internal/process/task_queues.js:97:5)

Error: ./src/styles.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

Error: ./node_modules/text-security/text-security.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

Error: ./node_modules/text-security/text-security-circle.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

Error: ./node_modules/swiper/swiper-bundle.min.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

Error: ./node_modules/@clr/icons/clr-icons.min.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

Error: ./node_modules/@clr/ui/clr-ui.min.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

Error: ./node_modules/flatpickr/dist/flatpickr.min.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

Error: ./node_modules/select2/dist/css/select2.min.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

Error: ./node_modules/ag-grid-community/dist/styles/ag-grid.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

Error: ./node_modules/ag-grid-community/dist/styles/ag-theme-balham.css
Module build failed (from ./node_modules/mini-css-extract-plugin/dist/loader.js):
ModuleBuildError: Module build failed (from ./node_modules/postcss-loader/dist/cjs.js):
Error: [object Object] is not a PostCSS plugin
at Processor.normalize (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:168:15)
at new Processor (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/processor.js:52:25)
at postcss (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss/lib/postcss.js:55:10)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:94:41)
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/webpack/lib/NormalModule.js:316:20
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:367:11
at /home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:233:18
at context.callback (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/loader-runner/lib/LoaderRunner.js:111:13)
at Object.loader (/home/naxs/Trabajo/NaxsCloud/NaxsCloudWeb/node_modules/postcss-loader/dist/index.js:103:7)

</details>

[petebacondarwin]

OK so there are two issues here:

1. PostCSS dependency - this can be worked around by installing it directly at the top level npm i postcss -D
2. Missing HttpClient import - looking into this now.