我是新来的,最近我正在用tensorflow和keras学习CNN,我试图运行cnn模型来训练mnist数据集,但在我用tnesorflow 2.0升级到2.1之后,我收到了这个错误消息: raiseRuntimeError("tf.placeholder() is not compatible with "
RuntimeError: tf.placeholder
在运行"rails generate devise:install“时,我从devise得到了错误"User not respond to 'devise‘method”。想法:你该如何解决?inside 'config/initializers/devise.rb' or before your application definition in 'config/application.rb' (RuntimeError