Add try/except traceback logging to _hunyuan_gpu_infer to surface AttributeError

app.py

@@ -1215,6 +1215,23 @@ def _hunyuan_gpu_infer(video_file, prompt, negative_prompt, seed_val,
     All paths passed explicitly as positional args to survive ZeroGPU isolation.
     When *clip_dur_s* is set, the clip is extracted inside the GPU window.
     """
+    import traceback as _tb
+    print(f"[_hunyuan_gpu_infer] START video={video_file!r} model_size={model_size!r} num_steps={num_steps!r} clip_start={clip_start_s} clip_dur={clip_dur_s}")
+    try:
+        return _hunyuan_gpu_infer_impl(
+            video_file, prompt, negative_prompt, seed_val,
+            guidance_scale, num_steps, model_size, crossfade_s, crossfade_db,
+            num_samples, silent_video, segments_json, total_dur_s,
+            clip_start_s, clip_dur_s)
+    except Exception as _e:
+        print(f"[_hunyuan_gpu_infer] EXCEPTION: {_e}")
+        _tb.print_exc()
+        raise
+
+def _hunyuan_gpu_infer_impl(video_file, prompt, negative_prompt, seed_val,
+                            guidance_scale, num_steps, model_size, crossfade_s, crossfade_db,
+                            num_samples, silent_video, segments_json, total_dur_s,
+                            clip_start_s=0.0, clip_dur_s=None):
     _ensure_syspath("HunyuanVideo-Foley")
     from hunyuanvideo_foley.utils.model_utils  import denoise_process
     from hunyuanvideo_foley.utils.feature_utils import feature_process