ocket8888 edited a comment on issue #4045: Requests to cache_stats endpoint returns Internal Server Error URL: https://github.com/apache/trafficcontrol/issues/4045#issuecomment-548024439 Supposedly they're caused by the same root issue, which would make it a duplicate, in my opinion. But firstly, we need to make sure that's actually what's going on. When Traffic Stats has just started, it won't have any data. If you request a time period for which it has no data, instead of returning a set of zero data points - or even just `null`s -InfluxDB will send a totally empty response. When that happens, Traffic Ops doesn't know why or what to do about it, and so it throws up its hands and gives the client back an Internal Server Error. "Expected Behavior" in that scenario could be to hand back a valid, empty array, but as has been previously discussed, Traffic Ops should not disclose struggling components in these scenarios. So the key to understanding what issue is taking place is > _"Wait about 5 minutes and try again - does the problem still manifest?"_
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