Describe the bug
The command fonoster agents:rm [ID] should return "Not found" if the ID of the Agent doesnt exist. Instead is failing with the following error:

This utility will help you update an existing Agent
Press ^C at any time to quit.
    Error: 2 UNKNOWN: Cannot read property 'spec' of null
    Code: 2

To Reproduce
Steps to reproduce the behavior:

1. Go

When enabling multiple msbuild nodes it could fail due to locking "xxx.deps.json" files
We have faced with this issue using latest version of microsoft.aspnetcore.mvc.testing nuget package
C:\ZZZZ\nuget\microsoft.aspnetcore.mvc.testing\5.0.7\build\net5.0\Microsoft.AspNetCore.Mvc.Testing.targets(56, 5): error MSB3027: Unable to copy file "D:\XXXX\bin\Release\YYYY.deps.json" to "bin\Release\YYYY.d

Motivated by huggingface/transformers#12789 in Transformers, one welcoming change would be replacing assertions with proper exceptions. The only type of assertions we should keep are those used as sanity checks.

Currently, there is a total of 87 files with the assert statements (located under datasets and src/datasets), so when working on this, to manage the PR s