Fatal error: Uncaught Error: Class 'Composer\Installers\Test\TestCase' not found in /home/weknowfleetco/public_html/vendor/composer/installers/tests/Composer/Installers/Test/BitrixInstallerTest.php:15 Stack trace: #0 {main} thrown in /home/weknowfleetco/public_html/vendor/composer/installers/tests/Composer/Installers/Test/BitrixInstallerTest.php on line 15