Apologies for reviving an old thread, but I’m suddenly experiencing something similar, but not react related. Please take a look here: https://github.com/arunoda/meteor-up/issues/1003#issuecomment-217857444
It’s Meteor’s Galaxy hosting.
I was having the same issue with DigitalOcean; I just resolved. The problem was the RAM Memory; my droplet has 512mb, I resolved creating a 4gb Swap file on the server !!