Fatal error: Uncaught mysqli_sql_exception: Column 'user_id' cannot be null in /home/u312717234/domains/psuinfo.tech/public_html/depedresearchportal/rps/include/common.php:12 Stack trace: #0 /home/u312717234/domains/psuinfo.tech/public_html/depedresearchportal/rps/include/common.php(12): mysqli_stmt->execute() #1 /home/u312717234/domains/psuinfo.tech/public_html/depedresearchportal/rps/client_view_research.php(14): storeLogs() #2 {main} thrown in /home/u312717234/domains/psuinfo.tech/public_html/depedresearchportal/rps/include/common.php on line 12