Email builder not working - yet another issue of the same name

Your software
My Mautic version is: 3.1.0
My PHP version is: PHP Version 7.2.33-
Webserver: Apache/2.4.41
My Database type and version is:

Your problem
My problem is:
As shown in the below picture, I am not able to use the builder.

This is the error in console:
Uncaught SyntaxError: Unexpected token u in JSON at position 0
at JSON.parse ()
at Object.Mautic.initGrapesJS (app.js?vd24bd845:706)
at Object.Mautic.launchBuilder (app.js?vd24bd845:706)
at HTMLButtonElement.onclick (2:1)
at Object.trigger (libraries.js?vd24bd845:683)
at HTMLButtonElement. (libraries.js?vd24bd845:688)
at Function.each (libraries.js?vd24bd845:153)
at jQuery.fn.init.each (libraries.js?vd24bd845:144)
at jQuery.fn.init.trigger (libraries.js?vd24bd845:688)
at jQuery.fn.init.jQuery.fn. [as click] (libraries.js?vd24bd845:796)

These errors are showing in the log:
Unfortunately: log doesnt show anything
It says"
Today’s Mautic error log is empty. Check server error log for error messages Mautic didn’t have a chance to catch."

The paths are writeable

Please help. this is my first usage and I am facing this issue.


You’re using an out of date version of Mautic. Please use the latest release and you should not experience this issue which was resolved several releases ago.

I have updated it to the latest version. Thank you very much as it is now working.