TypeError: Cannot convert a symbolic Keras input/output to a numpy array.

问题类型

TypeError: Cannot convert a symbolic Keras input/output to a numpy array. This error may indicate that you’re trying to pass a symbolic value to a NumPy call, which is not supported. Or, you may be trying to pass Keras symbolic inputs/outputs to a TF API that does not register dispatching, preventing Keras from automatically converting the API call to a lambda layer in the Functional Model.

原因

Keras 和tensorflow的版本匹配问题

解决方案

1.升级自己的tensorflow版本

pip install --upgrade tensorflow

升级至2.**版本中自带Keras ，这时你可以选择不安装Keras

2.打开下面链接查看自己tensorflow版本对应的keras版本

https://docs.floydhub