Fatal error: Uncaught Error: Class 'advanced_testcase' not found in /home/junior47895/public_html/aulavirtual/AulaVirtual_22Apr/lib/tests/content_test.php:36 Stack trace: #0 {main} thrown in /home/junior47895/public_html/aulavirtual/AulaVirtual_22Apr/lib/tests/content_test.php on line 36