When deployed I get the following two errors involving script_runner.py and import pyPDF2

I have another question. How do I get rid of this error?

File "/home/appuser/venv/lib/python3.7/site-packages/streamlit/script_runner.py", line 354, in _run_script
    exec(code, module.__dict__)File "/app/293rd_pending_cases/pending_cases.py", line 33, in <module>
 
    self.read(stream)File "/home/appuser/venv/lib/python3.7/site-packages/PyPDF2/pdf.py", line 1689, in read
    stream.seek(-1, 2)