QuickFIX Python Session File Corruption Issue

Question

I am encountering a recurring problem in my production environment using QuickFIX Python. The issue revolves around the corruption of session files (FIX.4.4-A-B.session) in the Sessions folder. The session file is expected to contain a valid date-time format (e.g., 20240108-11:42:01), but at random times, additional and seemingly random characters are appended(20231228-22:00:02§♥♥ 0qÄ@☼sS_½•LÕ☼s£↓› GLrµ©5¹vj↕Æ#¿ÈíÜ), leading to date-time conversion errors.

This is a critical problem as it causes disruptions in the normal functioning of the system, and unfortunately, the error is being thrown from the underlying C++ codebase, making it challenging to catch and handle programmatically.

1. Are there known reasons or common scenarios that lead to such corruption in session files?
2. How can I better handle or prevent such corruption in the session files within my Python code?
3. Is there a recommended way to catch and handle errors originating from the C++ core of QuickFIX within the Python environment?

Versions:

• Fix version - FIX44
• I am using quickfix-ssl 1.15.1.post4
• OS: Linux - ubuntu - 18.04

Any insights or suggestions would be greatly appreciated. Thank you!