Below is the problem that give me Railway when I do "railway up":

[Region: us-west1]

Using Nixpacks

context: ef14477f9dd66e6b5f5580505effdf31
Nixpacks build failed

Nixpacks was unable to generate a build plan for this app.
Please check the documentation for supported languages: https://nixpacks.com

The contents of the app directory are:

usuario-service/
gateway-service/
.gitignore
configuracion-service/
eureka-service/
servicio-service/
venta-service/
config-data/
cliente-service/
agendamiento-service/
moduloCompra-service/
config-service/

Build failed

moduloCompra-service/

config-service/