[Form] The index 0 is not within the property path

[Aerendir]

Q	A
Bug report?	yes
Feature request?	no
BC Break report?	no
RFC?	yes/no
Symfony version	x.y.z

The tests of my bundle https://github.com/Aerendir/stripe-bundle fails with PHP 7.2.

The reported error is:

1. SerendipityHQ\Bundle\StripeBundle\Tests\Model\CreditCardStripeTokenTypeTest::testSubmitValidData
   Symfony\Component\PropertyAccess\Exception\OutOfBoundsException: The index 0 is not within the property path
   /home/travis/build/Aerendir/stripe-bundle/vendor/symfony/property-access/PropertyPath.php:188
   /home/travis/build/Aerendir/stripe-bundle/vendor/symfony/property-access/PropertyAccessor.php:218
   /home/travis/build/Aerendir/stripe-bundle/vendor/symfony/form/Extension/Core/DataMapper/PropertyPathMapper.php:93
   /home/travis/build/Aerendir/stripe-bundle/vendor/symfony/form/Form.php:618
   /home/travis/build/Aerendir/stripe-bundle/Tests/Form/Type/CreditCardStripeTokenTypeTest.php:23

The code is here.
The build is here.

Unfortunately I have no idea of how to fix the problem.

[mvrhov]

I think something like that was reported a few days ago and it might also be fixed in latest 3.2/master
I can't seem to find the issue.

[xabbuh]

@Aerendir Is this still an issue or was it solved in the meantime as suggested by @mvrhov?

[Aerendir]

@xabbuh , Unfortunately I cannot test it with the version 3.2 at the moment...

[xabbuh]

Thanks for the feedback. I am closing here for now then. Please let us know if you still experience the issue with the latest patch releases and best provide an example to reproduce your issue and we can reopen then.

[Aerendir]

@xabbuh Ok, thank you! 👍

[garak]

Just found this issue via google search. I'm facing the same problem with php 7.2 and latest Symfony (currently 3.2.8

[xabbuh]

@garak Please provide some steps that allow to reproduce your issue.