add debugging for generation failure

app.py

@@ -198,7 +198,7 @@ if project_root not in sys.path:
 
 from tools.groq_client import client as groq_client
 from openai import OpenAI
-from tools.generate_lyrics import generate_structured_lyrics, format_lyrics_for_yue, format_lyrics
+from tools.generate_lyrics import generate_structured_lyrics, format_lyrics
 
 # Apply patches after all imports are set up
 patch_applied = apply_transformers_patch()
@@ -335,7 +335,16 @@ def generate_music_spaces(lyrics: str, genre: str, mood: str, progress=gr.Progre
             # Update command to use relative path since we're in the inference directory
             cmd[1] = "infer.py"
             
+            # Run with real-time output for debugging
+            print(f"🚀 Executing command: {' '.join(cmd)}")
             result = subprocess.run(cmd, capture_output=True, text=True, timeout=1200)  # 20 minutes
+            
+            # Print stdout and stderr for debugging
+            if result.stdout:
+                print(f"✅ Command output:\n{result.stdout}")
+            if result.stderr:
+                print(f"⚠️ Command stderr:\n{result.stderr}")
+            print(f"📊 Return code: {result.returncode}")
         finally:
             # Always restore original working directory
             os.chdir(original_cwd)
@@ -357,8 +366,12 @@ def generate_music_spaces(lyrics: str, genre: str, mood: str, progress=gr.Progre
             else:
                 return "Music generation completed but no audio file found."
         else:
-            error_msg = result.stderr[-1000:] if result.stderr else "Unknown error"
-            return f"Music generation failed: {error_msg}"
+            error_msg = f"Return code: {result.returncode}\n"
+            if result.stderr:
+                error_msg += f"Error: {result.stderr[-1000:]}\n"
+            if result.stdout:
+                error_msg += f"Output: {result.stdout[-1000:]}"
+            return f"Music generation failed:\n{error_msg}"
             
     except subprocess.TimeoutExpired:
         return "Music generation timed out after 20 minutes. Please try again."