Hi Leo,
Specifically, there are 5 rows where chr:pos:a1:a2 are the same but with different rsID:
19 11526765 G T rs167479 6.11329118632915e-08 632709
19 11526765 G T rs2487644119 1.36162681974593e-19 309154
19 11526765 G T rs2512459460 1.36162681974593e-19 309154
19 11526765 G T rs748261393 1.36162681974593e-19 309154
19 11526765 G T rs773574027 1.36162681974593e-19 309154
For the reference panel that you selected (1KG EUR), this is the variant in the reference panel used by FUMA:
19 11526765 19:11526765:G:T rs167479
So you may choose to keep just the
rs167479 variant or remove all 5 variants before running SNP2GENE.
As a test, I removed these 5 variants completely and there was no issue. However, you might want to look into why this is the case in your dataset.