singlet::RankPlot() not working if nmf was ran using singlet::RunNMF with list of ranks.

[hlmtran]

singlet::NMF(r=2:10) > singlet::RankPlot()

Error in slice():
ℹ In argument: which.max(iter).
ℹ In group 1: rep = 1 k = 2.
Caused by error:
! object 'iter' not found
Run rlang::last_trace() to see where the error occurred.