v3.1.8 (2020/03/27)
- Fixed to display an error if PHP7.4 was used during installation
- Fixed a bug that a non-administrator user would get an error when logging in when the user who was set in the menu deleted the table (occurs when the table was deleted in the past version)
- Fixed a bug that an error occurs when editing when "Enter only once" is set in the custom column setting and not "hidden field" is set in the custom form.
- Fixed a bug when deleting multiple data by deleting custom data of API
- Other minor corrections