When I'm using the enricher() to enrich my gene list, it always shown error msg as "Error in as.vector(x, mode) :
  cannot coerce type 'closure' to vector of type 'any' ".

The input gene ID is gene symbol, and character format, it looks like as below:

> str(list_GeneSymbol)
 chr [1:1106] "DUSP10" "CFAP20" "RGCC" "MYADM" "RGS1" "AAED1" "TRAF6" ...

egmt_kegg <- enricher(list_GeneSymbol, TERM2GENE = c_kegg,
                      pvalueCutoff = 0.05, pAdjustMethod = "BH", universe,
                      minGSSize = 10, maxGSSize = 500, qvalueCutoff = 0.2)

How could I fix it out? Thanks.