I have also executed: mvn dependency:tree |grep log [INFO] | | +- com.esotericsoftware:minlog:jar:1.3.0:compile [INFO] +- log4j:log4j:jar:1.2.17:compile [INFO] +- org.slf4j:slf4j-log4j12:jar:1.7.16:compile [INFO] | | +- commons-logging:commons-logging:jar:1.1.3:compile
and the POM reports the above libraries. Many Thanks for your help. Carlo On 5 Aug 2016, at 18:17, Carlo.Allocca <carlo.allo...@open.ac.uk<mailto:carlo.allo...@open.ac.uk>> wrote: Please Sean, could you detail the version mismatch? Many thanks, Carlo On 5 Aug 2016, at 18:11, Sean Owen <so...@cloudera.com<mailto:so...@cloudera.com>> wrote: You also seem to have a version mismatch here. -- The Open University is incorporated by Royal Charter (RC 000391), an exempt charity in England & Wales and a charity registered in Scotland (SC 038302). The Open University is authorised and regulated by the Financial Conduct Authority.