[QUESTION] What is the expected format for the --gene-sets-file command?

[timothevanmeter]

Hello,

I am trying to import a set of genes in cellxgene at launch time using the --gene-sets-file command, but I always get the following error message:
Error: Unable to read genesets CSV file: Gene set CSV file missing the required column header.

The whole launch command I am using is:
./cellxgene launch --gene-sets-file genes.csv nathans_30dims_k40_res0.2_analysed_assigned.h5ad -p 5005

The cellxgene version is cellxgene v1.1.2 and the launch works perfectly fine without the import with
./cellxgene launch nathans_30dims_k40_res0.2_analysed_assigned.h5ad -p 5005
The GUI is accessible at localhost:5005 withtout any problem.

The genes.csv file looks like this:
Rho,Epha7,Gnat1

I tried a bunch of different formats for the csv file without any success.
Is there an expected format that will work for the import?

Thank you in advance for your consideration.