Uncaught TypeError: Cannot read property 'classList' of null

[nhlpl]

Issue?

Uncaught TypeError: Cannot read property 'classList' of null
    at s (sockets.js:187)

How to reproduce?
Go to /admin and restart NodeBB.

What is expected?
No extra errors compared to NodeBB 1.16.2.

Screenshot:

Hosted on Alpine Linux edge using Podman v3.1.0
Running on a machine with 4 CPU(s) and 7962 MB RAM
NodeBB v1.17.0-beta.5 is run with Node.js v14.16.0 on a single process (port 4567)
NodeBB SHA:42c4f963f91669784366b2dc61a0493b8f70d571
Built with Nobbic v0.5.0
It uses:

• nginx (docker.io/nginx:alpine)
  with NJS_VERSION=0.5.3 NGINX_VERSION=1.19.9
• redis (docker.io/redis:alpine)
  with REDIS_VERSION=6.2.1
• nodebb (localhost/nodebb:14.16.0-1.17.0-beta.5)
  with NODE_VERSION=14.16.0 YARN_VERSION=1.22.5 NODEBB_VERSION=1.17.0-beta.5

[barisusakli]

already fixed in cb53a64