[Python] Geckodriver fails with 'Failed to decode response from marionette' when using...

What I’m trying to do:

I have a CPU with 32 cores. I'm using Python to scrape product data with Firefox WebDriver (geckodriver). I split 300 products across 32 processes using the multiprocessing module, and within each process I use 2 threads with ThreadPoolExecutor to scrape in parallel.

Error: *Failed to decode response from marionette
*Can not connect to the Service /snap/bin/geckodriver

What I’ve tried: *Limiting the number of threads. *Adding small delays before starting threads. *Checking if geckodriver and Firefox are correctly installed via snap.

My question: *How can I prevent geckodriver from failing when using multiprocessing + multithreading to launch many Firefox WebDriver instances?

Environment:

Python version: 3.12.3 OS: Ubuntu 22.04 Firefox version: 138.0 Geckodriver: installed via snap (/snap/bin/geckodriver) (0.36.0)-version

What were you expecting?

I expected the scraping to proceed without errors and for Firefox WebDriver (geckodriver) to be able to launch successfully across multiple processes and threads without encountering issues like "Failed to decode response from marionette" or "Can not connect to the Service /snap/bin/geckodriver"

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