API Errors Using Ruby Gem

I’m getting a lot of errors today while using the Middleman gem. HTML from Heroku and Cloudflare being printed to the terminal, such as the following:

<title>site-api.datocms.com | 520: Web server is returning an unknown error</title>

sorry @webworkshop we have seen some of those today as our servers are running out of memory. We are trying different alternatives to mitigate the situation, hopefully that should improve by the end of the day