Fatal error: Uncaught TypeError: Argument 1 passed to DBWork::show_work_detail() must be of the type int, null given, called in /home/heartsnext/heartsnext.jp/public_html/job_detail.php on line 13 and defined in /home/heartsnext/heartsnext.jp/public_html/DBWork.php:123 Stack trace: #0 /home/heartsnext/heartsnext.jp/public_html/job_detail.php(13): DBWork->show_work_detail(NULL) #1 {main} thrown in /home/heartsnext/heartsnext.jp/public_html/DBWork.php on line 123