WordPress database error: [Column 'userlogin' cannot be null]INSERT INTO `eleWP_yan_homework` (`userlogin`, `subject`, `submitdate`, `level`, `startPage`, `pages`, `correctby`) VALUES (NULL, NULL, '2017-10-26 20:11:54', NULL, NULL, NULL, 'NA')
INSERT INTO `eleWP_yan_homework` (`userlogin`, `subject`, `submitdate`, `level`, `startPage`, `pages`, `correctby`) VALUES (NULL, NULL, '2017-10-26 20:11:54', NULL, NULL, NULL, 'NA')