Bug: ImportError: libc.musl-x86_64.so.1 after latest AWS Lambda Python 3.9 release

[simone-macri]

Description:

After the latest AWS Lambda runtime release for Python 3.9 (based on the amazon/aws-lambda-python:3.9 base image), our Lambda function fails to run and immediately raises an ImportError related to a missing shared object:

ImportError: libc.musl-x86_64.so.1: cannot open shared object file: No such file or directory
This issue was not present in the previous version.

Steps to reproduce:

1. Use the latest AWS Lambda runtime for Python 3.9 (based on amazon/aws-lambda-python:3.9).
2. Deploy a previously functioning Lambda function.
3. Invoke the function.
4. Observe the runtime failure.

Observed result:

ImportError: libc.musl-x86_64.so.1: cannot open shared object file: No such file or directory

Expected result:

The function should execute normally without failing due to missing system dependencies.