PHP 8: myCalendarTest::test2 fails: TypeError: implode(): Argument #2 ($array) must be of type ?array, string given
Running tests/myCalendarTest.php::test2
fails with the error TypeError: implode(): Argument #2 ($array) must be of type ?array, string given
on line 61.
This only occurs with PHP 8 (PHPUnit 8.5.14).
Downstream Gentoo bugreport: https://bugs.gentoo.org/779196 (contains a complete build log)