2018-05-15T08:35:08.939652367Z app[web.1]: _http_outgoing.js:356
2018-05-15T08:35:08.942750162Z app[web.1]: throw new Error('Can\'t set headers after they are sent.');
2018-05-15T08:35:08.942762527Z app[web.1]: ^
2018-05-15T08:35:08.942767659Z app[web.1]:
2018-05-15T08:35:08.942772310Z app[web.1]: Error: Can't set headers after they are sent.
2018-05-15T08:35:08.942794082Z app[web.1]: at ServerResponse.OutgoingMessage.setHeader (_http_outgoing.js:356:11)
2018-05-15T08:35:08.942799402Z app[web.1]: at ServerResponse.header (/app/node_modules/express/lib/response.js:662:10)
2018-05-15T08:35:08.942804610Z app[web.1]: at ServerResponse.send (/app/node_modules/express/lib/response.js:146:12)
2018-05-15T08:35:08.942809725Z app[web.1]: at handle_error (/app/routes/deps.js:156:9)
2018-05-15T08:35:08.942814467Z app[web.1]: at Request._callback (/app/routes/deps.js:83:14)
...