Hi Julie,
I added this syntax to the web config file this morning and the original error disappeared regarding base types.
<SafeControl Assembly="Microsoft.SharePoint, Version=16.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" Namespace="Microsoft.Sharepoint.ApplicationPages.CentralAdminMenuPage" TypeName="*" />
Now I get the following error that does not help me much:
Sorry, something went wrong
An unexpected error has occurred.
TECHNICAL DETAILS
Troubleshoot issues with Microsoft SharePoint Foundation.
Correlation ID: db279e9f-aa57-70ba-5214-29a977e96fdc
Any idea how to fix this issue?
The ULS logs show the following error on this correlation ID
User Key aysu8 Unexpected The value is neither a claim user name nor a claim user name suffix. Value: 'xxxx\xxxxx'. 1b1e9e9f-8afa-70ba-5214-23fba131c9f8
Cheers,
Chris