How to reproduce:
1. Create and open a blank project
2. Click the “AI” dropdown box
3. Click “Agree and install Unity AI“
4. Go to Edit → Project Settings
5. Select any organization in the “Organization“ dropdown menu
6. Select any project in the “Cloud project“ dropdown menu
7. Click “Link Unity project to cloud project”
8. Go to the AI dropbox and select Generate New → Animation
9. Observe the Console and the opened “New Animation” window

Expected result: some AI model is selected, and you can generate Animations with prompts in the “New Animation” window
Actual result: Errors occur in the console, and the “New Animation“ window shows “No model selected“

Reproducible with: 1.0.0-pre.4 (6000.2.6f1), 1.0.0-pre.20 (6000.2.6f1, 6000.3.0b3, 6000.4.0a1)
Could not test with: 1.0.0-pre.3 (AI assistant Generate features not present), 1.0.0-pre.20 (6000.0.58f1) (AI assistant is only available for versions 6000.2.x and newer)

Reproducible on: Windows 11
Not reproducible on: No other environment tested

Note:
Error messages:
- ApiException`1: Internal Server Error
- Error reason is 'Unknown' and no additional error information was provided (https://generators-beta.ai.unity.com).