File Manager Upload Error

Having an issue with one of our installs:
Failed to load resource: the server responded with a status of 500 (Internal Server Error)

The images actually upload but it thumbnails don't get created, and the console and the modal window show the errors.

Any ideas?

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JohntheFish replied on at Permalink Reply
Can you post a full trace with debug to display enabled, or from the Log.
WebSolutions replied on at Permalink Best Answer Reply
It was the fileinfo PHP extension that was missing that caused this. Installed that extension and everything was good.