CMS - Media not showing

To be completed by the original poster:

CMS Version

Version 3.0.2 (running on Windows 10 under IIS)

Player Type

Not applicable

Player Version

Not applicable

Issue

In the CMS, when I navigate to Library > Media, both grids are empty.

Here’s the log (at debug level) for that:
ID Run Date Channel Function Level Page Message
16 b894585 9/7/2021 13:09 WEB GET INFO /library/view “Request stats: {
“default”: {
“select”: 9
},
“log”: {
“insert”: 9
},
“length”: 0.42956995964050293,
“memoryUsage”: 19451264,
“peakMemoryUsage”: 19711312
}.”
15 b894585 9/7/2021 13:09 WEB GET DEBUG /library/view Returning the default value: ‘vertical’
14 b894585 9/7/2021 13:09 WEB GET DEBUG /library/view UserOption navigationMenuPosition not found
13 b894585 9/7/2021 13:09 WEB GET DEBUG /library/view Returning the default value: ‘0’
12 b894585 9/7/2021 13:09 WEB GET DEBUG /library/view UserOption hideNavigation not found
11 b894585 9/7/2021 13:09 WEB GET DEBUG /library/view Returning the default value: ‘vertical’
10 b894585 9/7/2021 13:09 WEB GET DEBUG /library/view UserOption navigationMenuPosition not found
9 b894585 9/7/2021 13:09 WEB GET DEBUG /library/view CMS font CSS returned from Cache.
8 b894585 9/7/2021 13:09 WEB GET DEBUG /library/view Install Fonts called with options: {“invalidateCache”:false}
7 b894585 9/7/2021 13:08 WEB GET DEBUG /library/view Loading 1. All Objects = 0

When I debug in the browser, there are 2 404 not found errors for GETs where the URL starts with http://192.168.21.72/library?draw=1&columns[0][data]=mediaId

When I copy and paste that URL into a browser, I get the following error message from Xibo:
Twig Error Unable to find template “grid.twig” (looked into: C:\inetpub\wwwroot\xibo-cms/views, C:\inetpub\wwwroot\xibo-cms/modules, C:\inetpub\wwwroot\xibo-cms/reports, C:\inetpub\wwwroot\xibo-cms/custom, C:\inetpub\wwwroot\xibo-cms/modules).

Had to change the following setting from 4096 to 8192 in IIS for the website:
Default Web Site-> Request Filtering - Maximum Query String (Bytes)

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