HUNYUAN_FIX_APPLIED.md

Hunyuan3D Error Handling Fix

Issue

The Hunyuan3D generator was failing with "list index out of range" error when parsing API results.

Root Cause

The new code had simplified error handling that didn't account for all possible result formats from the Hunyuan3D API:

• Empty tuples
• Different dict key names ('value', 'path', 'name')
• Non-dict/non-string result types

Fix Applied

Updated huggingface-space-v2/generators/hunyuan.py with:

1. Robust Result Parsing:

   • Check for empty tuples before accessing result[0]
   • Try multiple dict keys: 'value', 'path', 'name'
   • Fallback to string conversion for unexpected formats
   • Validate GLB file exists before returning

2. Enhanced Logging:

   • Log raw result type and content
   • Log all API parameters
   • Log connection status
   • Full traceback on errors

3. Better Error Messages:

   • Specific message for "list index out of range" (server-side failure)
   • Specific message for timeouts (suggest lower quality)
   • Generic fallback with full error details

Testing

To test the fix:

cd huggingface-space-v2
python test_mesh_generation.py

Or deploy to HF Space:

./FINAL_DEPLOYMENT.ps1

Expected Behavior

• If Hunyuan3D API returns unexpected format: Clear error message suggesting retry
• If generation times out: Suggest using lower quality preset
• All errors include full traceback for debugging
• Successful generations work as before

Deployment Status

• ✅ Fix applied to generators/hunyuan.py
• ⏳ Ready for deployment
• ⏳ Needs testing on HF Space

Next Steps

1. Deploy to HF Space
2. Test with various prompts and quality settings
3. Monitor logs for any remaining issues
4. Update MCP server if needed