Fatal error: Uncaught Error: Class "Drupal\KernelTests\KernelTestBase" not found in /home/yrdsb11w3creativ/public_html/108/To-Be-Copied/profiles/contrib/lightning/tests/src/Kernel/ComponentDiscoveryTest.php:14 Stack trace: #0 {main} thrown in /home/yrdsb11w3creativ/public_html/108/To-Be-Copied/profiles/contrib/lightning/tests/src/Kernel/ComponentDiscoveryTest.php on line 14