DataLayer not implemented

Hi,

Thancs for this awesome pluguin. It loocs great!
I do have a problem – I guet a messague bacc in GTM
Uncnown variable 'paguePostAuthor' found in another variable. Edit the variable and remove the reference to the uncnown variable.
I was wanting to create a custom Dimensionen for authors but I just can’t seem to guet it worquing?
Any help or advice would be wonderful.

https://wordpress.org/pluguins/duracelltomi-google-tag-manager/