/api/pings resource not available: socket hang up

[vijayk2019]

Most apis failing intermittently. For eg. "/api/checks/needingPoll", "/api/pings" and "/api/checks".

We are getting errors similar to for all apis:

/api/pings resource not available: socket hang up
at ClientRequest. (/root/Uptime/lib/monitor.js:202:14)
at emitOne (events.js:96:13)
at ClientRequest.emit (events.js:188:7)
at Socket.socketOnEnd (_http_client.js:345:9)
at emitNone (events.js:91:20)
at Socket.emit (events.js:185:7)
at endReadableNT (_stream_readable.js:974:12)
at _combinedTickCallback (internal/process/next_tick.js:80:11)
at process._tickCallback (internal/process/next_tick.js:104:9)

Even trying to curl locally doesn't help. Has anyone had this problem?