Fatal error: Uncaught Error: Class "Drupal\Core\Block\BlockBase" not found in /home/fnbrshareacopy/public_html/modules/contrib/twig_tweak/tests/twig_tweak_test/src/Plugin/Block/FooBlock.php:18 Stack trace: #0 {main} thrown in /home/fnbrshareacopy/public_html/modules/contrib/twig_tweak/tests/twig_tweak_test/src/Plugin/Block/FooBlock.php on line 18