runtime error

Exit code: 3. Reason: mkdir -p failed for path /.config/matplotlib: [Errno 13] Permission denied: '/.config' Matplotlib created a temporary cache directory at /tmp/matplotlib-jxm7v3zf because there was an issue with the default path (/.config/matplotlib); it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing. INFO: Started server process [1] INFO: Waiting for application startup. ERROR: Traceback (most recent call last): File "/usr/local/lib/python3.10/site-packages/starlette/routing.py", line 692, in lifespan async with self.lifespan_context(app) as maybe_state: File "/usr/local/lib/python3.10/site-packages/starlette/routing.py", line 569, in __aenter__ await self._router.startup() File "/usr/local/lib/python3.10/site-packages/starlette/routing.py", line 671, in startup handler() File "/code/app/main.py", line 49, in startup_event data_en = data_en.dropna(subset=subset) File "/usr/local/lib/python3.10/site-packages/pandas/core/frame.py", line 6670, in dropna raise KeyError(np.array(subset)[check].tolist()) KeyError: ['answer'] ERROR: Application startup failed. Exiting.

Container logs: