Time : 07:41:36
SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'username' cannot be null
Raw SQL : insert  into mr_user (username ,password ,addtime) value (:username,:password,1519454496)

Time : 07:40:52
SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'username' cannot be null
Raw SQL : insert  into mr_user (username ,password ,addtime) value (:username,:password,1519454452)

Time : 07:40:49
SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'username' cannot be null
Raw SQL : insert  into mr_user (username ,password ,addtime) value (:username,:password,1519454449)

Time : 07:40:43
SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'username' cannot be null
Raw SQL : insert  into mr_user (username ,password ,addtime) value (:username,:password,1519454443)
