Phpunit: Error : Call to undefined method PHPUnit\Util\ErrorHandler::handleError()

[Spomky]

| Q | A
| --------------------| ---------------
| PHPUnit version | 8.3
| PHP version | 7.3
| Installation Method | Composer

Hi,

when running my tests, I have the error Error : Call to undefined method PHPUnit\Util\ErrorHandler::handleError().
I downgraded PHPUnit from 8.3.3 to 8.3.0 and the error still occures.
It is gone when setting 8.2.5 or lower.

Any idea?

[sebastianbergmann]

The ErrorHandler class is not covered by the backward compatibility promise for PHPUnit. Your tests should not rely on PHPUnit implementation details such as this.

[Spomky]

Thank you for the prompt answer.

I don’t rely on that class in my tests.
In the meantime, I've figured out that the issue is caused by a symfony component.

Regards.