So whenever we try to upload an image to our forums in a topic, we seem to get an error (i'll post an image below). I have checked if any plugins/applications need to be updated but none are available. Any ideas where I can start searching for the problem to resolve it? Thank you.

This looks to be an imagick error btw. Most likely imagick module is not installed or is disabled. Contact your host and ask them about it.

ImageMagick is broken on your server - contact your host, or switch your site to use GD to process images in the AdminCP.