Maven error - java.lang.NoClassDefFoundError: org/slf4j/helpers/MarkerIgnoringBase

Question

Getting up and running with Maven.

Trying to build a project I\'ve inherited. I\'ve resolved majority of the issues but am now seeing a weird error:

Answer 1

Thats an open issue in Maven https://issues.apache.org/jira/browse/MNG-5787. I was facing the exact same issue and got it fixed by upgrading Maven from 3.3.1 to 3.3.9.