3rd Party Jar imports URCaps

I added these lines to the pom.xml file, and now the URCaps appear in ursim
pom_2

But now I get this error below. It does not seem to find the class I have used, but it is hopefully something small I have missed with importing the jar file. Anyone got an idea?

java.lang.NoClassDefFoundError: de/re/easymodbus/modbusclient/ModbusClient