Building artifacts

We configured Mulesoft project in Jenkins with CI/CD. When I run a build I get the following message.

*Downloading from mule-snapshots:
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
*[ERROR] Unresolveable build extension: Plugin org.mule.tools.maven:mule-app-maven-plugin:1.7 or one of its dependencies could not be resolved: Failed to collect dependencies at org.mule.tools.maven:mule-app-maven-plugin:jar:1.7 → org.jfrog.maven.annomojo:maven-plugin-tools-anno:jar:1.4.0 @ *
[ERROR] Unknown packaging: mule @ line 8, column 16

  • @ *
    [ERROR] The build could not read 1 project → [Help 1]
    *[ERROR] *
    [ERROR] The project -amq:1.0.0-SNAPSHOT (/opt/jenkins/home/workspace/_IVP/tst-topic-amq/pom.xml) has 2 errors
    [ERROR] Unresolveable build extension: Plugin org.mule.tools.maven:mule-app-maven-plugin:1.7 or one of its dependencies could not be resolved: Failed to collect dependencies at org.mule.tools.maven:mule-app-maven-plugin:jar:1.7 →

The proxy is set correctly, but iam still getting this error.

as its been almost 24 hours without a response, I was hoping more knowledgable java people might know, but I think its a straight up maven issue, not really a jenkins issue. I feel like its having trouble downloading the mule build extension? Probably somewhere higher in the logs?