Hi All,
I'm working on Joomla as a common user, for my site, from long time. Not happy to do this, I've installed version 5 from zero and imported old contents by sql.
Now I often get this error commons.js:2 Uncaught TypeError: Cannot read properties of null (reading 'src')
in many case of new menù Item, getting blank page and the error on title.
No matter content. Articles, Categories List, etc... many times it's impossible creating a new menu item that works fine.
Problem seams to be in alias. If a call for "real" link they works fine. but menu items are build to use alias name, right?
for exaple: www.mysite.it/?option=com_content&view=category&id=6 works fine, but www.mysite.it/myalias, not
I've tried with different template and style. Same problem.
Site is https://www.inatural.it/, wrong item example "riproviamo"
Can you have an advice for me?

Thank you!