Hello, I have analysed three dataset and found 3 common DEG among them.But when i go for the GSEA analysis and try to draw the plot ,there I faced a trouble .When i run it,in return i get the bellow messages in R.I am very much confused about that.

preparing geneSet collections... GSEA analysis... no term enriched under specific pvalueCutoff... Warning message: In preparePathwaysAndStats(pathways, stats, minSize, maxSize, gseaParam, : All values in the stats vector are greater than zero and scoreType is "std", maybe you should switch to scoreType = "pos".

Here is my code:

library(readr)
sign_DEG_ <- read_csv("For GSEA,ORA,Pathway analysis/sign_DEG.csv")
View(sign_DEG)
library(dplyr)
library(stringr)
library(ggplot2)
library(ggpubr)
library(clusterProfiler)
library(ReactomePA)
library(org.Hs.eg.db)
library(EnsDb.Hsapiens.v86)
library(enrichplot)

geneid <- sign_DEG$SYMBOL

genes <- ensembldb::select(org.Hs.eg.db, 
                           keys=geneid, 
                           columns=c("ENTREZID"),
                           keytype="SYMBOL")

genes <- na.omit(genes)

sign_DEG <- merge(genes, sign_DEG, by = 'SYMBOL')

write.csv(sign_DEG_,"./Sign DEG after omit.csv", row.names = TRUE)

sign_DEGLogFC <- sign_DEG$logFC

names(sign_DEGLogFC) <-sign_DEG$ENTREZID

sign_DEG <- sort(sign_DEG, decreasing = TRUE)

bpSars <- gseGO(sign_DEGLogFC,
                ont = 'BP',
                org.Hs.eg.db)

bpSars <- setReadable(bpSars, org.Hs.eg.db)
bpSars@result$Description <- str_to_title(str_wrap(bpSars@result$Description, 50))

write.csv(bpSars, './Result/gsea-bp-sars.csv')
dotplot(bpSars, showCategory=10, split=".sign") + facet_grid(.~.sign)
ggsave('./Result/gsea-bp-sarscov.tiff', height = 8, width = 8)