Update app.py

app.py

@@ -184,6 +184,19 @@ with gr.Blocks(css=css) as demo:
         [model_output_text, model_output_box, annotated_image],
     )
 
+# ---- Make Gradio/Starlette error responses small & safe (no Content-Length drama) ----
+from fastapi import Request
+from starlette.responses import PlainTextResponse
+
+app = demo.app  # FastAPI app behind Gradio Blocks
+
+@app.exception_handler(Exception)
+async def _catch_all_exceptions(request: Request, exc: Exception):
+    # Return a very small body so Starlette/Uvicorn never miscounts bytes
+    return PlainTextResponse("Internal Server Error", status_code=500)
+# --------------------------------------------------------------------------------------
+
+
 # -------- Launch (Spaces-friendly) --------
 demo.queue().launch(
     server_name="0.0.0.0",