我试图降级我的conda版本。使用版本4.6.2的conda,我运行了condainstallconda=4.5.12。然后我去运行其他conda命令,但遇到了以下错误:CondaUpgradeError:Thisenvironmenthaspreviouslybeenoperatedonbyacondaversionthat'snewerthanthecondacurrentlybeingused.Anewerversionofcondaisrequired.targetenvironmentlocation:/home/selah/anaconda3currentcondavers