To solve the Widget Problem in the Latest Version of WordPress, you will have to install a plugin called Classic Widgets and you will have to make some settings in it, as you have been told in the details below, then your widget problem will be solved.
Install Classic Widgets Plugin
There are two ways to install Classic Widgets which are mentioned below:
1.Open WordPress.org and search for and Download the Classic Widgets Plugin.
2. Open your WordPress Dashboard and go to Add New Plugin and search for Classic Widgets and click on the Install Now button.
Note:- Install Classic Widgets Plugin and Activate It Your Widget Problem Will Be Solved.