Hello Yuqi,
When I am running the "Visualize average top pairs genes expression for training data" part, there comes a big list of missing genes

and a Warning message:
In brewer.pal(n = 12, name = "Spectral") :
n too large, allowed maximum for palette Spectral is 11
Returning the palette you asked for with that many colors
The result is like this, not like what you show in the tutorial.

Could you please tell me how to fix this issue?
Thanks!
Best,
YJ