Fatal error: Uncaught Error: Class "core_question\local\bank\column_base" not found in /home/andinaes/public_html/aulavirtual/question/bank/customfields/classes/custom_field_column.php:31 Stack trace: #0 {main} thrown in /home/andinaes/public_html/aulavirtual/question/bank/customfields/classes/custom_field_column.php on line 31