Management Reporter Database errors, very large, and additional file in DB Properties

Hello,

We have been experiencing Management Reporter errors.  

SQL Error
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Could not allocate space for object 'dbo.TableName' in database 'SomeDB' because the 'PRIMARY' filegroup is full.

I ran the Shrink files process in SQL and am currently running the shrink Database process.

I also noticed an "extra" file in the SQL DB Properties.