I'm trying to perform GSEA with the fgsea package in R:

fgseaRes<-fgsea(pathways=pathwaysH,stats=new_res_important)

However, I receive the error:

Warning message:
In preparePathwaysAndStats(pathways, stats, minSize, maxSize, gseaParam,  :
  There are ties in the preranked stats (5.02% of the list).
The order of those tied genes will be arbitrary, which may produce unexpected results.

As suggested by this post: https://github.com/YuLab-SMU/clusterProfiler/issues/214, I have randomly ranked values with the same log2fc. However, I still receive the same error. I had also removed genes with NA values for log2fc (I don't know if this is necessary). However, I still receive the same error. Has anybody encountered this issue and knows how to solve it?

My stats object looks something like this:

.

My pathways object looks something like this:

Also, when I try to see if the rank is duplicated:

any(duplicated(rank))

The result is FALSE. So I'm really unsure of why I receive this warning