Entering a Schedule k-1 for appropriate tax year

My wife received a schedule K-1 which at the top of the form indicates 2018, but then the prepared entered a tax year on the form for 9/3/18 through 8/31/2019.  I'm told the details on the K-1 should be applied to the 2018 tax year, and I'd need to file an amended return, but distributions from the estate occurred over time (one in 2018 and another in 2019.)  This is the final K-1.

 

Do I report the details of this schedule K-1 on my 2019 return, since the calendar date entered ends in 2019, or should K-1 details be tied to the receipt of the funds or the date of the form sent to me, e.g. '2018?'