Error while using SEATS decomposition in the seasonal package

Hi, and welcome!

Please see the FAQ: What's a reproducible example (`reprex`) and how do I do one? Using a reprex, complete with representative data will attract quicker and more answers.

In this case, however, the first example from the seasonal::seas help page clearly shows the problem

m <- seas(AirPassengers)
#> Error: Objects of type seas not supported by autoplot.

Created on 2020-04-06 by the reprex package (v0.3.0)