error

0|app      | info: App listening on http://localhost:8080
0|app      | Loaded data from xml file successfully!
0|app      | Generating a non-contract shipment...
0|app      | Parsing the response to JSON format...
0|app      | info: App listening on http://localhost:8080
0|app      | info: App listening on http://localhost:8080

0|app      | Loaded data from xml file successfully!
0|app      | Generating a non-contract shipment...
0|app      | Parsing the response to JSON format...
0|app      | '{"non-contract-shipment-info":{"xmlns":"http://www.canadapost.ca/ws/ncshipment-v4","shipment-id":"618551551169032730","tracking-pin":"123456789012","links":{"link":[{"rel":"self","href":"https://ct.soa-gw.canadapost.ca/rs/0008819373/nc
shipment/618551551169032730","media-type":"application/vnd.cpc.ncshipment-v4+xml"},{"rel":"details","href":"https://ct.soa-gw.canadapost.ca/rs/0008819373/ncshipment/618551551169032730/details","media-type":"application/vnd.cpc.ncshipment-v4+xml"},{"
rel":"receipt","href":"https://ct.soa-gw.canadapost.ca/rs/0008819373/ncshipment/618551551169032730/receipt","media-type":"application/vnd.cpc.ncshipment-v4+xml"},{"rel":"refund","href":"https://ct.soa-gw.canadapost.ca/rs/0008819373/ncshipment/618551
551169032730/refund","media-type":"application/vnd.cpc.ncshipment-v4+xml"},{"rel":"label","href":"https://ct.soa-gw.canadapost.ca/rs/artifact/c576c813c7d8e911/10001360641/0","media-type":"application/pdf","index":"0"}]}}}'
0|app      | run into non contract error
0|app      | You have triggered an unhandledRejection, you may have forgotten to catch a Promise rejection:
0|app      | Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
0|app      |     at ServerResponse.setHeader (_http_outgoing.js:470:11)
0|app      |     at ServerResponse.header (C:\Users\nguye\Desktop\Dev\Dev_Machool\shipping\node_modules\express\lib\response.js:767:10)
0|app      |     at ServerResponse.send (C:\Users\nguye\Desktop\Dev\Dev_Machool\shipping\node_modules\express\lib\response.js:170:12)
0|app      |     at module.exports (C:\Users\nguye\Desktop\Dev\Dev_Machool\shipping\app\api-logger.js:3:22)
0|app      |     at canadaPostController.generateLabel.catch.then.catch (C:\Users\nguye\Desktop\Dev\Dev_Machool\shipping\app\routes\shipments.js:28:24)
0|app      |     at process.internalTickCallback (internal/process/next_tick.js:77:7)