excon: Excon::Error::Socket: end of file reached (EOFError)

I’ve seen a few old threads on this. But suggestions like calling reset on connection doesn’t solve the issue. Any idea on what might be causing this?

#<Excon::Error::Socket: end of file reached (EOFError)>
19:16:04 worker.1 | end of file reached (EOFError)
19:16:04 worker.1 |   /Users/anders/.rbenv/versions/2.3.1/lib/ruby/2.3.0/openssl/buffering.rb:178:in `sysread_nonblock'
19:16:04 worker.1 |   /Users/anders/.rbenv/versions/2.3.1/lib/ruby/2.3.0/openssl/buffering.rb:178:in `read_nonblock'
19:16:04 worker.1 |   /Users/anders/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/excon-0.51.0/lib/excon/socket.rb:45:in `readline'
19:16:04 worker.1 |   /Users/anders/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/excon-0.51.0/lib/excon/response.rb:62:in `parse'
19:16:04 worker.1 |   /Users/anders/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/excon-0.51.0/lib/excon/middlewares/response_parser.rb:6:in `response_call'
19:16:04 worker.1 |   /Users/anders/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/excon-0.51.0/lib/excon/connection.rb:389:in `response'
19:16:04 worker.1 |   /Users/anders/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/excon-0.51.0/lib/excon/connection.rb:253:in `request'
19:16:04 worker.1 |   /Users/anders/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0/gems/excon-0.51.0/lib/excon/connection.rb:314:in `get'