Deprecated error please give me some solution on this

Hello,

This is a notice that we added to inform developpers of important changes in Polylang.

1. Identify which plugin or theme is causing this deprecation notice by deactivating all of them one by one (except Polylang). One has some compatibility code with Polylang that must be changed.
2. Inform the plugin/theme author of this change. You can send a link to our release notes: https://polylang.pro/polylang-3-4-eases-the-translation-of-custom-tables/
3. Set your server config not to display errors. They are useful to developpers not for production site.