Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /mnt/volume_lon1_01/backend/admin/vendor/seld/jsonlint/tests/JsonParserTest.php:17
Stack trace:
#0 {main}
thrown in /mnt/volume_lon1_01/backend/admin/vendor/seld/jsonlint/tests/JsonParserTest.php on line 17