[keycloak-user] Exception when using the keycloak java libraries with maven

Hi, I wrote a bit of code to get a JWT from keycloak. That works perfectly fine when executed in Eclipse. But if I try to run the jar file I created using Maven, I get an exception RESTEASY003215: could not find writer for content-type application/x-www-form-urlencoded I have explained everything in more detail here: https://stackoverflow.com/questions/52610464/java-keycloak-library-fails-... I hope you guys can help me. I have absolutely no idea what went wrong and it's driving me insane. Best regards Christian Leppelt