error processing pdf file - cryptography>=3.1 is required for AES algorithm

[vespero89]

During the processing of a pdf file, this exception is raised
File "/usr/local/lib/python3.11/site-packages/pypdf/_crypt_providers/_fallback.py", line 69, in decrypt
raise DependencyError(_DEPENDENCY_ERROR_STR)
pypdf.errors.DependencyError: cryptography>=3.1 is required for AES algorithm

Environment:

• unstructured-api v0.0.79 hosted on my VM, called via Langchain API