Please deactivate all the 3rd party plugins and activate only theme-required plugins on the site and then check the issue. I am sure your issue will be solved. Then Activate the 3rd party plugins one by one and check which plugin is creating the issue for you.
Otherwise, if the issue still exists then keep the 3rd party plugins deactivated and share the WP admin login URLof your site so I will check and give you a possible solution.
All plugins were disabled and reactivated one by one, when activating WooCommerce Product Options from Barn2 Plugins.
The problem has appeared again, what is the solution?
As this is very important