cannot spawn node instances request instance count in less than one

Question

Hello, 
 
 I have my process, and It doesnt fault, doesnt finish, but I have this:

Someone knows why happend this? 
 
 Thank you so much

Dave Lewis · Answer

You might have just attempted to spawn one instance for each of a certain list of things that happened to be empty. You'd want to add some sort of logic ahead of that to check for the list being empty before you start down that path. 
 That is essentially exactly what Sachin said.