Cannot open admintools after vertica installation

Hey guys, after a long time, i managed to install vertica on my cent os 7 machine :=) But now i want to run the admintools to create a database and i receive the following error. I set the permissions in the sudo visudo file like described. Why is it not working? What is missing? P.S. My username is ksalah and i created the dbadmin user during the vertica installation. At the moment i am working with the dbadmin user Thank you in advance Kalamangi