how to create hide excel feature using logic date formula

Hey Everyone, Here's my issue:

I am trying to get my excel sheet to get rid of the #NUM! error in my cell and replace it with a "0" or "-" symbol for cells where no data is going to be entered, my formula that I am currently using to determine my average volumes for a specific year works great!! just looking to clean up the excel sheet a little. Attached is a small sample of what I am working with.

Thank you all who take a look at this!!

Had a feeling this was the answer but seems I was applying it wrong haha, thank you ace!!!!!