Can't view the project with Generated Domain

Question

I recently deployed my nextjs application on railway and generate domain but i am not sure why i can't view it as it shows   
  
**Application failed to respond**

This error appears to be caused by the application.

If this is your project, check out your [deploy logs](https://docs.railway.com/guides/logs) to see what went wrong. Refer to our [docs on Fixing Common Errors](https://docs.railway.com/guides/fixing-common-errors) for help, or reach out over our [Help Station](https://station.railway.com/).

If you are a visitor, please contact the application owner or try again later.

0x5b62656e5d · Accepted Answer

Make sure the port the domain is mapped to is the same port your application is listening to.