Hi,

I'm using ReactomePA and I want to create a list of all reactome pathway of the GO term analysis.

gsepa <- gsePathway(geneList, 
           organism = "mouse", 
           exponent = 1, 
           minGSSize = 10, 
           maxGSSize = 500, 
           pvalueCutoff = "none", 
           pAdjustMethod = "BH", 
           verbose = TRUE, 
           seed = FALSE)
go.df <- data.frame(gsepa)
go.df  <- lsr::sortFrame(go.df, pvalue)
GOList <- vector('list', nrow(go.output))

for (i in 1:length(go.df$Description)) {
GOList[[i]] <- viewPathway(go.df$Description[[i]], 
            readable = TRUE, 
            organism = "mouse",
            foldChange = geneList) 
}

I get following error

Error in (function (classes, fdef, mtable)  : 
  unable to find an inherited method for function ‘convertIdentifiers’ for signature ‘"NULL"’

Any ideas how to solve this? When I run the viewPathway function individually the plots appear, so I assume it's something with my loop.

Thanks!