I am uninstall packets from elastix and reinstall issabel
cp /etc/yum.repos.d/Issabel.repo /etc/yum.repos.d/Issabel.repo.bkp
yum remove elastix elastix-framework -y
cp /etc/yum.repos.d/Issabel.repo.bkp /etc/yum.repos.d/Issabel.repo
yum install issabelpbx issabel -y
/usr/bin/issabel-admin-passwords --change
Please make backup before...
Good Look