TypeError: Cannot read property 'success' of undefined

[knowuh]

View details in Rollbar: https://rollbar.com/concordconsortium/Sage/items/1258/

TypeError: Cannot read property 'success' of undefined
  File "webpack:///./src/code/models/codap-connect.ts", line 255, in [anonymous]
                if (response.success) {
  File "webpack:///./node_modules/iframe-phone/lib/iframe-phone-rpc-endpoint.js", line 71, in IframePhoneRpcEndpoint
                        callback(undefined, new Error("IframePhone timed out waiting for reply"));