Cloud Functions for Firebase timeout

You can set the timeout and memory using runWith during function declaration,

exports.getUserMessage = functions.runWith({ memory: '2GB', timeoutSeconds: 360 }).https.onRequest(

You didn't say which of your three functions is timing out, but I'll take a guess at which one. Your HTTPS function getUserMessage isn't generating a response to the client. Cloud Functions will wait for 60 seconds (by default) for it to generate a response, and if it doesn't, it will kill the function and leave that message in the log.

Every code path in an HTTPS function should generate some response to the client.