I have a package (biscuiteer) that is failing the Windows server devel build (but not the Linux or Mac builds) due to an error when running the examples. The returned error is:

Error in (function (classes, fdef, mtable)  : 
    unable to find an inherited method for function 'seqinfo' for signature '"list"'
Calls: CpGindex ... seqlevelsStyle<- -> seqlevelsStyle<- -> seqinfo -> <Anonymous>

I've tried recreating the issue on a Windows laptop running Windows 10 Enterprise and cannot recreate the error either through R CMD build ., running devtools::run_examples(), or running the code myself.

Any thoughts or suggestions would be much appreciated.