runtime error

Exit code: 1. Reason: Matplotlib created a temporary cache directory at /tmp/matplotlib-q4c4f05w because the default path (/.config/matplotlib) is not a writable directory; 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:__main__:API keys loaded successfully. INFO:__main__:OpenAI client initialized successfully. ERROR:__main__:Error loading knowledge base: Error loading ./data_source/time_to_rethink_trust_book.md Traceback (most recent call last): File "/usr/local/lib/python3.8/dist-packages/langchain_community/document_loaders/text.py", line 42, in lazy_load with open(self.file_path, encoding=self.encoding) as f: FileNotFoundError: [Errno 2] No such file or directory: './data_source/time_to_rethink_trust_book.md' The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/app.py", line 1658, in <module> knowledge_base = load_knowledge_base() File "/app.py", line 1655, in load_knowledge_base raise e File "/app.py", line 1649, in load_knowledge_base documents = loader.load() File "/usr/local/lib/python3.8/dist-packages/langchain_core/document_loaders/base.py", line 30, in load return list(self.lazy_load()) File "/usr/local/lib/python3.8/dist-packages/langchain_community/document_loaders/text.py", line 58, in lazy_load raise RuntimeError(f"Error loading {self.file_path}") from e RuntimeError: Error loading ./data_source/time_to_rethink_trust_book.md

Container logs: