joshjackson

Correct! I noticed the mbstring error on the plugin page.

Found the issue!

Cerber needs to have the mbstring option enabled in php to function correctly. All I had to do was provision a php package with mbstring included and I was good to go!

I apologize, I meant upload, not update.

Here’s exactly what happens:

I attempt to upload a file (image, pdf, doesn’t matter) in the media browser on WordPress or the media browser in the post/page editor.
The file appears to upload, but stops at the last moment and issues the generic error reading only “HTTP Error” at the top of the media page.
When I disable Cerber, this does not happen.

This problem only arose when I updated from PHP 5.6 to 7.3.