I got stuck with a strange error when debugging with eclipse, so make a note
Title error when starting Tomcat app, environment related ...
Because I had loaded a library with a different version. Check the dependencies in pom.xml.
If you think it's OK because there is no problem trying to put the library in pom.xml for the time being There was an old and new xmlrpc jar file in the WEB-INF / lib directory ... it was a mistake.