Fatal error: Call to a member function setLBInfo() on null in /var/www/html/includes/db/LoadBalancer.php on line 770

I'm using Docker Compose to deploy MediaWiki in my stack. My setup used to work, but a few months ago, I started getting this error: Fatal error: Call to a member function setLBInfo() on null in /var/www/html/includes/db/LoadBalancer.php on line 770

I took a look at the source code around that line and it appears to be something with the database being null. I've checked my login details, changed the password to make sure, but I'm still getting this error. If it makes a difference, I'm using MariaDB (however, this worked previously while using MariaDB). I have several other services connected to the same database server, they each have their own database.

Any ideas how to fix this? Thanks!

version: '2'
services:
  database:
    restart: unless-stopped
    image: mariadb
    environment:
      - MYSQL_ROOT_PASSWORD=<password, irrelevant>
    volumes:
      - /data/database:/var/lib/mysql/:rw
  wiki:
    restart: unless-stopped
    image: benhutchins/mediawiki:latest
    environment:
      - MEDIAWIKI_SITE_SERVER=https://wiki.neonorb.com:80
      - MEDIAWIKI_DB_TYPE=mysql
      - MEDIAWIKI_DB_HOST=database
      - MEDIAWIKI_DB_NAME=neonorb_wiki
      - MEDIAWIKI_DB_USER=neonorb_wiki
      - MEDIAWIKI_DB_PASSWORD=<password>
    volumes:
      - ./wiki/LocalSettings.php:/data/LocalSettings.php:ro
      - /data/wiki/images/:/data/images/:rw
      - /data/wiki/extensions/:/data/extensions/:rw
    depends_on:
      - database
      - httpd # proxys to MediaWiki, not included in this issue. This handles SSL rather than by this image
    links:
      - database:database # don't think this is required, but it doesn't work either way

benhutchins / docker-mediawiki

Fatal error: Call to a member function setLBInfo() on null in /var/www/html/includes/db/LoadBalancer.php on line 770 #11