Hi Victor, I am migrating from J3 to J4 and after installing add-on Easyblog the message "An error has occurred. 0 Class "JString" not found" is displayed.

Below the reproduction steps for JLex Comment:
1) Install add-on Easyblog for JlEx comment
=> Module JLex Comment Easyblog become visible
=> Editing Module JLex Comment Easyblog become visible works fine with the message "Easyblog needs to be installed"

2) Install Easyblog
=> Editing Module JLex Comment Easyblog does not work properly and displays the message "An error has occurred. 0 Class "JString" not found".

It is exactly the same error as for JLex Reviw

Hope you can help

Thank you!