Actually we have solved this long time ago, but probably you have an old version of the extension still installed. So you need to refresh the installed extensions.
On the Mac you can do so by:
- first fully close Wappler - from the tray above - right click quit
- From Finder choose Go to ~/Library/Application Support/Wappler
and delete the sub folder Configuration - start Wappler
All extension will be installed freshly now.
Let me know if that solved your problem.