this year I filled up the tax using my SIN number and since I have a business number (working as Uber driver) I also put my information of the extra income and expenses and I netfile directly to CRA. now I received an email from my business account say that I unfiled GST/HST returns on my business account. 

What should I do? fill up a second tax return with only my business expenses or I can send the same file.

also if I put all the info on my tax return why they don't use that also for my business number.