Unable to deploy Task 18: Install packages by using yum

Attempting to configure my environment to patch Linux CentOS 6 servers. When I attempt to apply this task I receive the following message:


After applying Tasks 51 Enable custom repository support - CentOS, Task 39 YUM: Check Available Package Updates and Task 301 Import RPM-GPG-Key-centos-release - CentOS 7 I receive the following at the end