60 Second Timeout on Elastic Beanstalk

I have a single-instance (NO load balancer) Docker container (NO proxy server) that times out at exactly sixty seconds no matter what I do.

Yes, I'm aware of the many seemingly "duplicate" questions. I've been trying to solve this problem for 40+ hours. I've seen them all.

Every single answer to these questions informs the user that they must change the settings of NGINX or the load balancer.

However, I have NEITHER NGINX or a load balancer for the environment, yet it still times out. I am mostly convinced that this is an AWS bug.

I have an endpoint titled time_test for the mini server I created. When I make a POST request to the endpoint, I get a timeout at exactly 60 seconds (the request throws an exception on my end).

Here's the Python code to make the request.

import requests
url = f"http://...us-east-1.elasticbeanstalk.com/"
time_to_sleep = 65
url += f"time_test?time_to_sleep={time_to_sleep}"
response = requests.post(url=url, timeout=10000)

This throws an HTTPSException error, indicating that the server terminated the response, always at exactly 60 seconds.

However, the logs show a successful response.

My logs (specifically, "eb-docker/containers/eb-current-app/eb-blahblah-stdouterr.log) shows

[01/Jun/2022 22:05:49] "POST /time_test?time_to_sleep=65 HTTP/1.1" 200 -

Note the 200 successful status code.

I'm going to continue to find an answer to this problem, which seemingly has none, and will report back if so. Any help with how to change the environment to accept >60 second requests would be greatly appreciated. Please don't reply, "You should have shorter request times." Not helpful or applicable.

(Platform = Docker running on 64bit Amazon Linux 2/3.4.10)