for 2019 and future years you must file partnership return. the IRS says that a LLC can not file as a qualified joint venture
https://www.irs.gov/businesses/small-businesses-self-employed/election-for-married-couples-unincorpo...
from the IRS article
How to Make the Election to be Treated as a Qualified Joint Venture
and
A Business Owned and Operated by the Spouses through a Limited Liability Company Does Not Qualify for the Election
