URL argument must be a string

[Dakota-Brown]

I have my app up and running on Heroku, however, when I post to it, I receive the following error from the app: "body": "The ticket was not created"

And this error on the console: TypeError [ERR_INVALID_ARG_TYPE]: The "url" argument must be of type string. Received type undefined.

I am sure this is a simple fix, but I am not sure what I am doing wrong. I haven't made any customizations, this is the stock cloned app. This might not be super helpful, I am still learning how to use everything and more than happy to provide more context if needed.

Here is the exact error:
2020-01-24T18:53:15.765366+00:00 app[web.1]: TypeError [ERR_INVALID_ARG_TYPE]: The "url" argument must be of type string. Received type undefined 2020-01-24T18:53:15.765383+00:00 app[web.1]: at validateString (internal/validators.js:112:11) 2020-01-24T18:53:15.765386+00:00 app[web.1]: at Url.parse (url.js:155:3) 2020-01-24T18:53:15.765388+00:00 app[web.1]: at Object.urlParse [as parse] (url.js:150:13) 2020-01-24T18:53:15.765391+00:00 app[web.1]: at dispatchHttpRequest (/app/node_modules/axios/lib/adapters/http.js:67:22) 2020-01-24T18:53:15.765395+00:00 app[web.1]: at new Promise (<anonymous>) 2020-01-24T18:53:15.765397+00:00 app[web.1]: at httpAdapter (/app/node_modules/axios/lib/adapters/http.js:20:10) 2020-01-24T18:53:15.765399+00:00 app[web.1]: at dispatchRequest (/app/node_modules/axios/lib/core/dispatchRequest.js:59:10) 2020-01-24T18:53:15.765401+00:00 app[web.1]: at processTicksAndRejections (internal/process/task_queues.js:94:5) { 2020-01-24T18:53:15.765403+00:00 app[web.1]: code: 'ERR_INVALID_ARG_TYPE' 2020-01-24T18:53:15.765405+00:00 app[web.1]: }

[Dakota-Brown]

Stackoverflow post with more information. Link