Fatal error: Uncaught Error: Class 'Composer\Installers\Test\TestCase' not found in /home/elcmrenh/public_html/wp-content/plugins/clean-and-simple-contact-form-by-meg-nicholas/vendor/composer/installers/tests/Composer/Installers/Test/PiwikInstallerTest.php:15 Stack trace: #0 {main} thrown in /home/elcmrenh/public_html/wp-content/plugins/clean-and-simple-contact-form-by-meg-nicholas/vendor/composer/installers/tests/Composer/Installers/Test/PiwikInstallerTest.php on line 15