POST 404 errors (xhr_send) after deploying app

I’m trying to deploy a Meteor app to Google’s App Engine service, and after the app is up, I see dozens of errors like this in the browser console:

POST https://xx.appspot.com/sockjs/974/pavh0x2j/xhr_send 404 ()

What does this mean and how do I correct this?

I have the same issue after setting DISABLE_WEBSOCKETS to 1. Did you find a solution?

I’m using Meteor Up on Amazon EBS. I have a lot of these errors. Any ideas how to fix it?

[19/May/2019:17:08:34 +0000] "POST /sockjs/240/o7hc2hhz/xhr_send HTTP/1.1" 404 57 "" "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Safari/537.36"
[19/May/2019:17:08:36 +0000] "POST /sockjs/680/ar4x5udx/xhr_send HTTP/1.1" 404 57 "" "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Safari/537.36"
[19/May/2019:17:08:37 +0000] "POST /sockjs/343/dkc_y1r3/xhr_send HTTP/1.1" 404 57 "" "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Safari/537.36"
[19/May/2019:17:08:37 +0000] "POST /sockjs/112/7p4n4m3u/xhr_send HTTP/1.1" 404 57 "" "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Safari/537.36"
[19/May/2019:17:08:39 +0000] "POST /sockjs/187/4qicgh0a/xhr_send HTTP/1.1" 404 57 "" "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Safari/537.36"

Looks like it is always related to requests coming from Google.

Any suggestions?

If it helps: https://www.lolvvv.com/

Unfortunately I still see a lot of these errors. Has anyone a solution or atleast an explanation for this error?

I am a relatively new developer (started five months ago) and am working on a music application using the MERN Stack that lets you submit your original chords and share them with the community. My app was running perfectly locally but when I deployed it to Heroku, I encountered several issues. Every time I submit the form with certain notes, I get a 503 server overload error and a mongo duplicate key error, which seems to cause the form to error out. If anyone could open up the console on my app and give me some ideas of how to start debugging, it would be greatly appreciated. This is my first MERN Stack deployment.

I don’t think this is a Meteor question. You may have more success on Stackoverflow.com

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