“self.optimizer_sigma" doesn't seem to be defined

[Confusedisprecious]

Hello! In the code of "vers2020", “self.optimizer_sigma" doesn't seem to be defined,and When the “ self.learnable_sigma" is true, the code does not work. How to make sigma learnable?

[idhamari]

Strang, please provide the complete error message. I think it is not used anymore check here.