runtime error

Traceback (most recent call last): File "/usr/local/lib/python3.10/site-packages/pymupdf/__init__.py", line 2799, in __init__ doc = mupdf.fz_open_document(filename) File "/usr/local/lib/python3.10/site-packages/pymupdf/mupdf.py", line 44169, in fz_open_document return _mupdf.fz_open_document(filename) pymupdf.mupdf.FzErrorUnsupported: code=6: cannot find document handler for file: PDF.file The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/home/user/app/app.py", line 42, in <module> app = MyApp() File "/home/user/app/app.py", line 16, in __init__ self.load_pdf("PDF.file") File "/home/user/app/app.py", line 20, in load_pdf doc = fitz.open(file_path) File "/usr/local/lib/python3.10/site-packages/pymupdf/__init__.py", line 2802, in __init__ raise FileDataError(f'Failed to open file {filename!r}.') from e pymupdf.FileDataError: Failed to open file 'PDF.file'.

Container logs: