java.lang.NoClassDefFoundError: scala when using postfixOps

[anatoliykmetyuk]

Minimized code

object wrapper {
  val / = ???
}

object foo {
  implicit val postfixOps: scala.languageFeature.postfixOps = scala.language.postfixOps
  val / = wrapper./
}

object Test {
  def main(args: Array[String]): Unit = {
    val wd = foo./
  }
}

Output

Exception in thread "main" java.lang.NoClassDefFoundError: scala
	at foo$.<clinit>(Test.scala:6)
	at Test$.main(Test.scala:11)
	at Test.main(Test.scala)
Caused by: java.lang.ClassNotFoundException: scala
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
	... 3 more

Expectation

Either for it to run properly, or the error message must not be misleading.