Error occured when attempting to access

Experiencing an issue with file downloads over 1.8gb, turns out it was Akamai that we use. Something called Large File Optimization was turned on that is supposed to remediate that issue. That resulted in the below error when trying to access the file manager (Akamai was instructed to only optimize that path), I have searched logs and can’t find anything that would point me in the direction of either fixing it or providing more information about why OoD is showing this error.
Any help is appreciated, I realize this is probably a very unique situation.

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You’re going to have to replicate the issue and see what the response is in the Network or Console tab of the browser. Basically we’re expecting JSON to be returned and given the error message, it was actually HTML.

Here’s an example of me trying to replicate in my dev dashboard. Note that we just changed alerting, so I don’t see the same alert you do - but what you can see is the response of this network call was an HTML page, not JSON data.