the little triangle appeared in the backend.
Form field can be shown, but the field data cannot be stored.
also, upon creation of field, the following message appeared:
1118 Row size too large. The maximum row size for the used table type , not acounintg BLOBs is 65535. You have to change some columns to TEXT or BLOBs SQL=ALTER TABLE reflux_jsn_sers ADD 'aaa' VARCHAR(255)