[Bug] Cannot create Personal Access Token - "Bad Request" error

Describe the bug When attempting to create a Personal Access Token (PAT) in API Management → Authorization → Personal Access Tokens, I receive a "Bad Request" error immediately after clicking "Confirm". This completely blocks me from using the Web SDK to integrate my bot into my website.

To Reproduce Steps to reproduce the behavior:

1. Go to 'API Management' → 'Authorization' → 'Personal Access Tokens'
2. Click on 'Add' to create a new token
3. Fill in the form: name "Secret token", expiration "Custom 2026-06-16", permissions "Bot Management + Chat Management", workspace "Personal"
4. Click on 'Confirm'
5. See error: "Bad Request" with log ID

Expected behavior The Personal Access Token should be created successfully so I can use the Web SDK to embed my chatbot on my website.

Screenshots I can provide screenshots of the error if needed.

Additional context

• Bot ID: 7640602617497174021
• Space ID: 7640542025359867912
• Account: userddu54z@user58... (Free plan)
• Already purchased 1,000,000 Coze tokens ($10) and error persists
• Log IDs: 20260518030120AB0AF1A307D6BB9A2F7B, 20260518031135650D67B9...
• Tried multiple times with different permission combinations and still get the same error

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