Python Firebase Admin SDK Listener sometimes throws Bad Gateway errors after DB is updated

从 db.reference(...).listen(exampleFunc) 使用的 Python Realtime Database 监听器路径，以及数据库更新后报告的 requests.exceptions.HTTPError 502 响应开始。将监听器设置以及所有可用的项目 ID 和时间戳与服务器端日志进行对照检查。完成的标准是确定一个可复现的原因，或记录应如何处理该间歇性故障。

[READ] Step 1: Are you in the right place?

Yes

[REQUIRED] Step 2: Describe your environment

• Operating System version: cos-stable-101-17162-40-5
• Firebase SDK version: latest?
• Firebase Product: realtime database, admin SDK
• Python version: 3.8
• Pip version: latest?

[REQUIRED] Step 3: Describe the problem

I have a database with customers data in it. When a new customer is added, a Firebase function triggers and updates '' to [user.uid]: to represent credits in my system. I have a google cloud VM that has an admin sdk database listener setup. Every month or so, after a new customer signs up, all of my listeners will randomly throw an error. The error I am seeing is:
requests.exceptions.HTTPError: 502 Server Error: Bad Gateway for url: https://-default-rtdb.firebaseio.com/.json

I am using the realtime listener described in this stack overflow post top answer:
https://stackoverflow.com/questions/49863708/python-firebase-realtime-listener

Steps to reproduce:

Hard to reproduce, but I can also provide my project ID and exact times for the issue so that the Firebase team can look into server-side logs to see what the issue might be.

Relevant Code:

from firebase_admin import db
def exampleFunc(event):
    try:
        print(event)
    except Exception as e:
        return
 
#in startup function
listener1=db.reference('<listening location 1>').listen(exampleFunc)
listener2=db.reference('<listening location 2>').listen(exampleFunc)