ibmblockchain/composer-rest-server crashes when using websockets

[andystanley]

Generated an Angular application using generator-hyperledger-composer. Initially everything works fine until the application is reloaded. Once reloaded the ibmblockchain/composer-rest-server cloud foundry app crashes and the following error is found in the logs.
Error
2018-07-19T12:53:25.89-0400 [RTR/5] OUT 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR events.js:183 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR throw er; // Unhandled 'error' event 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR ^ 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR Error: invalid status code: 17761 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at Receiver.controlMessage (/home/composer/.npm-global/lib/node_modules/@ibmblockchain/composer-rest-server/node_modules/ws/lib/Receiver.js:414:22) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at Receiver.getData (/home/composer/.npm-global/lib/node_modules/@ibmblockchain/composer-rest-server/node_modules/ws/lib/Receiver.js:325:12) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at Receiver.startLoop (/home/composer/.npm-global/lib/node_modules/@ibmblockchain/composer-rest-server/node_modules/ws/lib/Receiver.js:165:16) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at Receiver.add (/home/composer/.npm-global/lib/node_modules/@ibmblockchain/composer-rest-server/node_modules/ws/lib/Receiver.js:139:10) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at Socket._ultron.on (/home/composer/.npm-global/lib/node_modules/@ibmblockchain/composer-rest-server/node_modules/ws/lib/WebSocket.js:142:22) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at emitOne (events.js:116:13) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at Socket.emit (events.js:211:7) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at addChunk (_stream_readable.js:263:12) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at readableAddChunk (_stream_readable.js:250:11) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at Socket.Readable.push (_stream_readable.js:208:10) 2018-07-19T12:53:25.89-0400 [APP/PROC/WEB/0] ERR at TCP.onread (net.js:594:20)