Rhel 8

I’ve been having issues with one of my applications since rhel-7 is going to end.
we are trying to change the OS to rhel-8. But when I run the application Jenkins pipeline.
The pipeline is failing I’m getting this error
FAILED! => {“changed”: false, “msg”: “Failed to download packages: bind-32:9.11.36-11.el8_9.x86_64: Cannot download, all mirrors were already tried without success”, “results”:
The nexus we are using in our project is nexus oss.
Hoping to find resolution.