Django-revproxy is incompatible with Django 3.2

[azhavoro]

My actions before raising this issue

• Read/searched the docs
• Searched past issues

Expected Behaviour

Current Behaviour

Requests to Kibana raise AttributeError: 'HttpResponse' object has no attribute '_headers' exception
Seems django-revproxy is unsupported and there are no updates..
jazzband/django-revproxy#126

Possible Solution

Steps to Reproduce (for bugs)

1. Enable analytics
2. Try to open Analytics page

Context

Your Environment

• Git hash commit (git log -1): b7a50ac
• Docker version docker version (e.g. Docker 17.0.05):
• Are you using Docker Swarm or Kubernetes?
• Operating System and version (e.g. Linux, Windows, MacOS):
• Code example or link to GitHub repo or gist to reproduce problem:
• Other diagnostic information / logs:
  Logs from `cvat` container

Next steps

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