"<unknown assembly> type:<unknown type> member:(null)" error when creating a workspace in Unity Version Control

Steps to reproduce:

1. Create a new URP project
2. Open the Unity Version Control window (Window → Unity Version Control)
3.  Fill in the workspace details and click Create Workspace
4. Observe the error shown in the window
5. Click Create Workspace again
6. Observe the "workspace already exists" message
7. Close and reopen the Unity Version Control window 
8. Observe the UVC window

Actual results: "z assembly:<unknown assembly> type:<unknown type> member:(null)" error is shown when first creating a workplace, retrying shows "workspace already exists" error and created workspace is only shown after window refresh

Expected results: Workspace is created on first click with no errors

Reproducible with versions: 2.12.4 (6000.0.0f1, 6000.3.19f1, 6000.5.2f1, 6000.6.0b2, 6000.7.0a1)

Tested on (OS): Ubuntu 24.04

Notes:

• Does not reproduce on macOS 26.5