Fatal error: Uncaught Error: Class 'block_base' not found in /home/junior47895/public_html/aulavirtual/AulaVirtual_22Apr/blocks/private_files/block_private_files.php:26 Stack trace: #0 {main} thrown in /home/junior47895/public_html/aulavirtual/AulaVirtual_22Apr/blocks/private_files/block_private_files.php on line 26