Pivot table for future none existent months

I am not exactly clear on what is happening, but try to change the pivot table properties by right-clicking within the page area, then change the fields "for error values show" and "for empty cells show". Set these to zero. That may help.

Okay, I think visuals will help, this is the correct format:
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And this is what happens when I select a future month with no data for the pivot table to see:
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...And setting both those values to zero did not help, but thanks for the response.