This looks like an application specific issue. Can you please try googling, debugging, checking to see if there are issues in your project configuration? Running a quick search, I've found: https://stackoverflow.com/questions/77704501/unable-to-deploy-next-js-app-process-bin-bash-ol-pipefail-c-npm-ci-did-not that could help

The link you provided doesn’t contain the solution. I tried the solution mentioned in the link, but I think the issue is caused by --legacy-peer-deps. Should I add this to the build command or to the environment variables?

Unfortunately, this didn’t solve the issue. I added the ci:false environment variable, but it still didn’t work.

Here's a few suggestions:

• Could you try comparing the differences in your Next deployment and our QuickStart tutorial, which also deploys a basic Next app? https://docs.railway.com/quick-start

• There's a couple of requirements `npm ci` has — could you look under the npm ci section here in the top answer and see that your its not this case: "Throws an error if dependencies from these two files don't match package.json."
  https://stackoverflow.com/questions/52499617/what-is-the-difference-between-npm-install-and-npm-ci

• Are you able to build and run this in a docker locally on your machine? As it's failing on npm ci, you could try running that for your project and see if the error persists, in which case it is an application issue and you might be able to debug faster and then push to Railway