CRITICAL FIX: Create app directly at module level - no functions, no conditionals, no delays

app.py

@@ -966,86 +966,18 @@ def create_interface():
     
     return demo
 
-is_spaces = bool(os.getenv("SPACE_ID") or os.getenv("SYSTEM") == "spaces" or os.getenv("HF_SPACE"))
+demo = create_interface()
+demo.queue()
 
-root = FastAPI(title="SRMA-Mamba Unified App")
+root = FastAPI(title="SRMA-Mamba")
 root.mount("/api", api_app)
 
+app = mount_gradio_app(root, demo, path="/")
+
 @root.get("/healthz")
-def _root_health():
+def healthz():
     return {"status": "ok"}
 
-app = root
-
-print("=" * 60)
-print("Initializing SRMA-Mamba Liver Segmentation Space...")
-print("=" * 60)
-
-try:
-    demo = create_interface()
-    demo.queue()
-    print("✓ Gradio interface created and queued")
-    
-    if not HAS_MOUNT_GRADIO_APP:
-        print("✗ CRITICAL ERROR: mount_gradio_app not available!")
-        print("✗ Gradio version is too old. Need >= 4.44.1")
-        print("✗ Please check requirements.txt has gradio==4.44.1")
-        raise ImportError("mount_gradio_app not available. Upgrade Gradio to >= 4.44.1")
-    
-    app = mount_gradio_app(root, demo, path="/")
-    print("✓ Gradio mounted on FastAPI app via mount_gradio_app()")
-    print(f"✓ App type after mount: {type(app)}")
-    print(f"✓ App is root: {app is root}")
-    print(f"✓ App is callable: {callable(app)}")
-    
-    print("ℹ Models will be loaded on first inference (lazy loading)")
-    print("=" * 60)
-    print("✓ Initialization complete")
-    
-except Exception as e:
-    print(f"✗ Failed to initialize: {e}")
-    import traceback
-    traceback.print_exc()
-    
-    try:
-        with gr.Blocks(title="SRMA-Mamba: Error", theme=gr.themes.Soft()) as error_demo:
-            gr.Markdown(f"""
-            # ❌ Error Initializing Interface
-            The application failed to start. Please check the logs for details.
-            
-            **Error:** {str(e)}
-            
-            **Common causes:**
-            - Missing dependencies
-            - Model files not found
-            - Import errors
-            
-            Please check the Space logs for more information.
-            """)
-        error_demo.queue()
-        root = FastAPI(title="SRMA-Mamba Error App")
-        root.mount("/api", api_app)
-        app = mount_gradio_app(root, error_demo, path="/")
-        demo = error_demo
-        print("✓ Error interface created as fallback")
-    except Exception as e2:
-        print(f"✗ Even error interface failed: {e2}")
-        import traceback
-        traceback.print_exc()
-        with gr.Blocks() as final_fallback:
-            gr.Markdown("# Critical Error - Check logs")
-        app = final_fallback
-        demo = final_fallback
-
-if app is None:
-    print("✗ CRITICAL: app is None after initialization!")
-    raise RuntimeError("App was not set during initialization")
-
-print(f"✓ Final app variable set: {app is not None}")
-print(f"✓ App type at module level: {type(app)}")
-print(f"✓ App has __call__: {hasattr(app, '__call__')}")
-
 if __name__ == "__main__":
-    if not is_spaces:
-        import uvicorn
-        uvicorn.run(app, host="0.0.0.0", port=7860)
+    import uvicorn
+    uvicorn.run(app, host="0.0.0.0", port=7860)