UserAgent: Mozilla/5.0 (X11; CrOS aarch64 11021.56.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.76 Safari/537.36

Steps to reproduce the problem:
1. Go to https://cros-omahaproxy.appspot.com/
2. Paste a version number in the "Version Lookup" thing
3. Click "Lookup"

What is the expected behavior?
Should show a version matching the version you input.

What went wrong?
500 Internal Server Error

Did this work before? N/A 

Chrome version: 70.0.3538.76  Channel: stable
OS Version: 11021.56.0
Flash Version: 

To be honest, I'm trying to come up with a way to be notified whenever a new Chrome OS version is posted for one of my Chromebooks (just for fun, I guess). My first attempt pulls https://cros-omahaproxy.appspot.com/all but that URL takes about 20s to send any data. My next attempt involves https://dl.google.com/dl/edgedl/chromeos/recovery/recovery.json which is pulls much faster (it's a static, generated file) but it only lists Chrome OS versions, not Chrome versions (which are the only ones anyone talks about publicly). So to make the notification friendly, I wanted to lookup the version mapping.

I'm also looking at using the update APIs to pull what version is available. That looks like a more likely path, but it's still worth reporting that the omahaproxy thing is broken.