Please deactivate all the plugins not related to the theme check the issue, if the problem remains, leave the plugins not activated for us to check
Best Regards
This is a difficult path. Obviously, there is a problem with the link of this button.
I have created a backup copy of the site now. The site has not been launched yet. You can run the tests you need, I’ll wait. Will this option suit you?
Please activate them one by one checking the button and you will find. It is not possible just to look at the plugins and determine which one causes the problem.