Background of the issue:
After installation and the translation, the options to add a custom language menu on the site is not working, along with the rest of the options.
As discussed the fatal error is caused by the plugin "Listivo Core" which is part of your theme "Listivo".
This theme is not compatible with WPML and doesn't seem to want to cooperate as stated here: hidden link
Please contact the author to report the following issue:
An error of type E_ERROR was caused in line 17 of the file /home2/rctrade/public_html/wp-content/plugins/listivo-core/framework/app/Providers/Reviews/ReviewTitleServiceProvider.php. Error message: Uncaught TypeError: Tangibledesign\Framework\Providers\Reviews\ReviewTitleServiceProvider::filterTitle(): Argument #2 ($postId) must be of type int, string given, called in /home2/rctrade/public_html/wp-includes/class-wp-hook.php on line 324 and defined in /home2/rctrade/public_html/wp-content/plugins/listivo-core/framework/app/Providers/Reviews/ReviewTitleServiceProvider.php:17
Having said that, we can have a quick look at the issue to see if we can help you out with a workaround. That's not ideal, and I can't guarantee that we will find a solution.
For that, I have created this clean sandbox setup on our servers here: hidden link (one click login)
- I would need you to set up WPML + the WPML add-ons as you have them on your site (they are already installed) and to also install the Listivo theme and its plugin Listivo Core and try to recreate the issue.
Please don't install any other plugins that are not necessary to reproduce the issue.
