Hey there! I’m sorry you ran into this! That error pg app critical HTTP GET http://172.19.4.106:5500/flycheck/pg: 500 Internal Server Error Output: "failed to connect to proxy: context deadline exceeded means that the postgres wasn’t connecting to the proxy correctly, fortunately your restart seems to have resolved that, unfortunately we won’t be able to troubleshoot further why that happened since it was restarted.
You can set up alerts with fly checks handlers to alert you when you a health check fails in the future so that you can catch these things earlier and hopefully get them resolved faster. You can read more about that here!