Hii i get this error and i don’ t really know how to solve it:gather_out_cpu(): Expected dtype int64 for index
and this is my code def learn(self, batch_state, batch_next_state, batch_reward, batch_action): outputs = self.model(batch_state).gather(1, batch_action.unsqueeze(1)).squeeze(1) next_outputs = self.model(batch_next_state).detach().max(1)[0] target = self.gamma * next_outputs + batch_reward td_loss = F.smooth_l1_loss(outputs, target) self.optimizer.zero_grad() td_loss.backward(retain_variables = True) self.optimizer.step()