Can't build

Question

Hi,
I can't build my app here. It works on Heroku. Please tell me what to do.
Thanks,
- Steff

[View Deploy details](https://railway.app/project/98620aca-8471-41ba-bbd2-4ae0094360af/service/4e7caf63-4c9e-4719-b4bd-421718c0cd58?id=f33f365c-e416-4064-b19d-6184065da43d)

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