The Plugin menu option will not stop loading

I am logged in as admin. I just added 2 new file folders to the plugins genic folder. When I try to open plugins in the administrator menu, it continuously loads.

I added these 2 files
C:\Program Files\Ampps\www\ojs2\plugins\generic\customHeader-master
C:\Program Files\Ampps\www\ojs2\plugins\generic\translator-master

Here is developer console error-
HTTP500: SERVER ERROR - The server encountered an unexpected condition that prevented it from fulfilling the request.
(XHR)GET -$$$call$$$/grid/admin/plugins/admin-plugin-grid/fetch-grid?_=1578255518657