Unable to submit for Review

Everytime I try to submit my extension for review on my channel it says:

There was an error completing your request. Please try submitting again. If the error persists, we can assist you via one of our support channels

Am I doing something wrong?

Nevermind. After trying to save settings I realized there was an error with my whitelisted URLS. http://localhost was an issue, probably because it wasn’t https.
Was a little confusing because the error did not display on the review extension action, probably because my whitelisted urls were grandfathered in or something.