(Solution 1) By Uninstalling Gutenberg EditorThe First Step is to install the Classic Editor (Plugins->Add New->Search Classic Editor)2. Activate the Classic Editor Plugin3. You have DONE!In The Video Form[embedded content]So, I think your problem has been solved but if that is not solved that you can try below method.(Solution 2) By Uninstalling All PluginsIf that above solution is not working then only follow this tutorial.Uninstalling All Plugins2. And check the error on the installation of every plugin one by one.3....