Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/demoinvfsanz/public_html/vendor/doctrine/lexer/tests/Doctrine/Common/Lexer/AbstractLexerTest.php:13 Stack trace: #0 {main} thrown in /home/demoinvfsanz/public_html/vendor/doctrine/lexer/tests/Doctrine/Common/Lexer/AbstractLexerTest.php on line 13