Error 0 - Class 'MatthiasMullie\Minify\Minify' not found

amnessiacc

I did a migration from joomla 3x to 4x with a backup installation in the /mm4 folder there it looks good and everything works ok, but when I copy that installation to the root folder of my domain the Ja Coach template does not work anymore and I get a code:
0 - Class 'MatthiasMullie\Minify\Minify' not found.

I already deactivated all the modules and plugins, the problem is the templet, but I don't want to uninstall it because I added many module positions in my redesign...
What can I do?

Update 21 Sept

I have noticed that if I deactivate the "JS Optimization" option in the templete configuration the site works correctly, however in the mm4 folder where the first copy of the site is located everything works fine even with this option activated!

saguaros

amnessiacc Hi

If disabling JS Optimization resolved the issue, there may be a conflict when compressing JS files, possibly caused by a third-party extension's script. This template offers an option to exclude specific JS files when enabling the JS Optimization feature, you can simply add the JS file name there.

amnessiacc

saguaros Hi!

Thanks for your answer!

And why do you think that in the installation in /mm4 everything works ok even with “JS Optimized” activated?

Another question, what are the implications of not activating this option in the templete?

saguaros

amnessiacc Hi

You can check out this documentation for more info about JS/CSS optimization: https://www.joomlart.com/documentation/t4-framework/global-settings#optimization_jadoc