Error Message w/ No Explanation

We have been going through our website, updating broken links to image files, when suddenly today we’ve been hitting these error messages:
http://jointhestudio.com/wp-content/uploads/WTF.jpg
What’s weird is that they happen off and on. I’m used to WordPress errors, where there’s an explanation of what’s going wrong. Here, there’s nothing but “error”, which doesn’t really help. Despite having used WordPress for a few years, I’m still a novice at managing our website. So, if y’all have any idea what could be wrong, I’m all ears.

Currently, we have our WordPress hosted by GoDaddy and running through Cloudflare. Like I said, we haven’t been doing any heavy site editing, just going through our media and keeping our plugins up to date.