runtime error

hing client_utils.synchronize_async(self.cache) File "/usr/local/lib/python3.10/site-packages/gradio_client/utils.py", line 855, in synchronize_async return fsspec.asyn.sync(fsspec.asyn.get_loop(), func, *args, **kwargs) # type: ignore File "/usr/local/lib/python3.10/site-packages/fsspec/asyn.py", line 103, in sync raise return_result File "/usr/local/lib/python3.10/site-packages/fsspec/asyn.py", line 56, in _runner result[0] = await coro File "/usr/local/lib/python3.10/site-packages/gradio/helpers.py", line 487, in cache prediction = await Context.root_block.process_api( File "/usr/local/lib/python3.10/site-packages/gradio/blocks.py", line 1928, in process_api result = await self.call_function( File "/usr/local/lib/python3.10/site-packages/gradio/blocks.py", line 1514, in call_function prediction = await anyio.to_thread.run_sync( File "/usr/local/lib/python3.10/site-packages/anyio/to_thread.py", line 56, in run_sync return await get_async_backend().run_sync_in_worker_thread( File "/usr/local/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 2177, in run_sync_in_worker_thread return await future File "/usr/local/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 859, in run result = context.run(func, *args) File "/usr/local/lib/python3.10/site-packages/gradio/utils.py", line 832, in wrapper response = f(*args, **kwargs) File "/home/user/app/app.py", line 102, in predict f.write(json.dumps( File "/usr/local/lib/python3.10/json/__init__.py", line 231, in dumps return _default_encoder.encode(obj) File "/usr/local/lib/python3.10/json/encoder.py", line 199, in encode chunks = self.iterencode(o, _one_shot=True) File "/usr/local/lib/python3.10/json/encoder.py", line 257, in iterencode return _iterencode(o, 0) File "/usr/local/lib/python3.10/json/encoder.py", line 179, in default raise TypeError(f'Object of type {o.__class__.__name__} ' TypeError: Object of type NotFoundError is not JSON serializable

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