Error code on new coding model

Hi. I need help with an error I get while working on a new model. I am using puppet-2.7.10-1 on CentOs 6.3 (Linux) while the error code is:

$ sudo puppet agent --test

err: Could not retrieve catalog from remote server:

Error 400 on SERVER: Could not find class opendkim for hostname at

/etc/puppet/manifests/nodes.pp:13 on node hostname warning:

Not using cache on failed catalog err: Could not

retrieve catalog; skipping run

This is a result from the puppet agent and nothing makes sense to me. If someone might now why this happens (on several models and structures) it would be wonderful to hear from you!

Please check steps below
For general issues within Device Manager, see the following articles: