We're deploying an 11.5.0 Umbraco based site to IIS and running into a lot of errors that we hadn't seen on development. These errors seem to be causing serious issues with the site, to the point where some pages will refuse to load entirely. Here's a quick sampling of errors we're seeing a lot of in our logs:

• Could not load {dll} for type scanning, skipping. (happens with various system dlls)
• No actions matched the current request {RouteValues} (for various pages)
• Couldn't find any page with nodeId={NodeId}. This is most likely caused by the page not being published (the pages in question are published)
• Failed to process the template {Template} for {Endpoint}. A required route value is missing, or has a different value from the required default values.
• The antiforgery token could not be decrypted

Was wondering if anyone has run into errors on this scale before. The logs were over 1gb in less than an hour of the site running and grow rapidly.