Error in PlotRelativeExpression functions

[hkarakurt8742]

Hello everyone, I am using Sierra and I keep getting this error for all PlotRelativeExpression functions (TSNE, UMAP, Box).

error in apply(expression.set, 1, function(x) { : dim(x) must have a positive length

I checked my Sierra object and everything looks okay. I completed the DUTest without any problem. I also converted my counts in Sierra Object via as.matrix() function but nothing changed.

What might be the problem?

Thank you in advance.