Prior year rental depreciation is missing. I am using the web based product. How do I get it to reappear for my 2020 return?

I am having the same problem.  It was listed on 2019 schedule E but not carrying over for 2020. Never had this problem with turbotax before

Prior Depreciation does not show on Schedule E, only Current Year Depreciation.

You can look at Form 4562 from your 2019 return to see Accumulated Depreciation. 

If you sold your Rental Property in 2020, indicate that in the Rental Property Info section, and in the Assets section. 

TurboTax displays your Prior Depreciation based on Cost, Date Rented, etc. (screenshot). 

Click this link for info on How to Enter Sale of Rental Property.