FileNotFoundException: Could not load file or assembly 'Mono.TextTemplating, Version=2.2.0.0, Culture=neutral, PublicKeyToken=4fa72d50da25cb30'. The system cannot find the file specified. System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, ref StackCrawlMark stackMark, AssemblyLoadContext assemblyLoadContext, RuntimeAssembly requestingAssembly, bool throwOnFileNotFound) FileNotFoundException: Could not load file or assembly 'Mono.TextTemplating, Version=2.2.0.0, Culture=neutral, PublicKeyToken=4fa72d50da25cb30'. The system cannot find the file specified.

I have just run into this issue... almost 2 years later...

Could be anything, what if you revert the csproj changes, it should work again right? Then do the changes one by one as much as possible. Don't update non-umbraco things if not needed. But I guess it really depends which of the packages rely on Mono.TextTemplating (Umbraco and it's packages don't).

today i learnt -

dotnet nuget why ./sitename.csproj Mono.TextTemplating

should tell you what it is pulling this dependency in.

ooooh excellent! That one goes straight into my notes 👍

Yep, I used nuget why to find this was actually coming from EF