HELP! Error when getting info from Lookup column, passing value to another column from DATE to TEXT

I'm having additional issues in one of the initial parts of one of the workflows I've been working on.

The first list it runs on has a lookup column, where it gets a DATE from a column in another list. 

I'm trying to get the value from this lookup column to convert to TEXT (instead of DATE), but I keep getting an error when trying to do this.  At the moment, the error comes up when I try to define the first variable (a DATE type...which further confuses me, because the lookup is a DATE type as well).  

I've included pics of the workflow.  Can anyone see what I'm doing wrong, and how to fix it?  


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