There were duplicate row identifiers in the specified ranked list. One id was arbitarilly choosen. Details are below.
Generally, this is OK, but if you want to avoid this automagic, edit your ranked list so that all row ids are unique
# of row ids in original dataset: 18643
# of row UNIQUE ids in original dataset: 18631
# The duplicates were
GOLGA7B
CCDC177
RBL1
IDS
CKS1B
LTB4R2
PIK3R2
ZNF177
TMEM236
FAM47E
CRIP1
SDHD