Multiple http connections could crash daemon

[aguycalled]

data: dist/navtech.js:24595 - _http_outgoing.js:356
data: dist/navtech.js:24595 - throw new Error('Can't set headers after they are sent.');
data: dist/navtech.js:24595 - ^
data: dist/navtech.js:24595 - Error: Can't set headers after they are sent.
data: dist/navtech.js:24595 - at ServerResponse.OutgoingMessage.setHeader (http_outgoing.js:356:11)
data: dist/navtech.js:24595 - at ServerResponse.header (/root/navtech/node_modules/express/lib/response.js:719:10)
data: dist/navtech.js:24595 - at ServerResponse.send (/root/navtech/node_modules/express/lib/response.js:164:12)
data: dist/navtech.js:24595 - at Object.O.w.returnCheckedNode (/root/navtech/dist/navtech.js:1:10651)
data: dist/navtech.js:24595 - at /root/navtech/dist/navtech.js:1:10230
data: dist/navtech.js:24595 - at Hash. (/root/navtech/node_modules/md5-file/index.js:38:5)
data: dist/navtech.js:24595 - at Hash.g (events.js:291:16)
data: dist/navtech.js:24595 - at emitNone (events.js:86:13)
data: dist/navtech.js:24595 - at Hash.emit (events.js:185:7)
data: dist/navtech.js:24595 - at emitReadable (_stream_readable.js:432:10)
data: dist/navtech.js:24595 - at emitReadable (_stream_readable.js:426:7)
data: dist/navtech.js:24595 - at readableAddChunk (_stream_readable.js:187:13)
data: dist/navtech.js:24595 - at Hash.Readable.push (_stream_readable.js:134:10)
data: dist/navtech.js:24595 - at Hash.Transform.push (_stream_transform.js:128:32)
data: dist/navtech.js:24595 - at Hash._flush (crypto.js:68:8)
data: dist/navtech.js:24595 - at Hash. (_stream_transform.js:118:12)

[mogrith]

I'm seeing same issue