After updating the IDE, there were problems working with maven on the command line. When I entered mvn -version, I've had error: Error: Could not find or load main class org.codehaus.plexus.classworlds.launcher.Launcher Caused by: java.lang.ClassNotFoundException: org.codehaus.plexus.classworlds.launcher.Launcher
I reinstalled maven and changed the settings of the parameter M2_HOME, but this did not lead to a solution to the problem.