Hey! Are you using your own dockerfile or any of the railway included builders like Nixpacks or Railpack?w

I'm using my own dockerfile

Looks like its trying to get a controller that doesn't exist, which is what I think is for performance instrumentation. Do you have any more logs?

This is the only relevant part of the log, it repeats itself a couple of times.

I've tried removing all the performance related dependencies, and disabling spring's performance metrics with:

management.metrics.enable.processor: false

But it doesn't change anything

Can you share your Dockerfile? I see a few reports of this happening with outdated version of JDK.

This is the dockerfile:

FROM gradle:8.2.1 AS build
COPY --chown=gradle:gradle . /home/gradle/src
WORKDIR /home/gradle/src
RUN gradle bootJar

FROM openjdk:17-jdk-slim-buster
EXPOSE 8080
COPY --from=build /home/gradle/src/build/libs/backend-1.0.0.jar /app/
RUN bash -c 'touch /app/backend-1.0.0.jar'
ENTRYPOINT ["java","-jar","/app/backend-1.0.0.jar"]

I would recommend upgrading to at least Java 21. 21 is latest LTS, so you should probably be on it anyway. I see many people with this issue on this image of Java 17 and none on Java 21.

That solved it, thanks!

Glad to hear it!