Exception (Integrity constraint violation) 'yii\db\IntegrityException' with message 'SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'user_id' cannot be null The SQL being executed was: INSERT INTO `session` (`data`, `user_id`, `id`, `expire`) VALUES ('__flash|a:0:{}', NULL, 'senuo9rem5u7e08027itvv3u86', 1679306717)' in /home/naccchart/public_html/vendor/yiisoft/yii2/db/Schema.php:631 Stack trace: #0 /home/naccchart/public_html/vendor/yiisoft/yii2/db/Command.php(854): yii\db\Schema->convertException(Object(PDOException), 'INSERT INTO `se...') #1 /home/naccchart/public_html/vendor/yiisoft/yii2/web/DbSession.php(173): yii\db\Command->execute() #2 [internal function]: yii\web\DbSession->writeSession('senuo9rem5u7e08...', '__flash|a:0:{}') #3 /home/naccchart/public_html/vendor/yiisoft/yii2/web/Session.php(186): session_write_close() #4 [internal function]: yii\web\Session->close() #5 {main}