keras AssertionError: Duplicate registrations for type 'experimentalOptimizer'

Question

I'm trying to build a Deep Q Learning code for CartPole-v1 game. However I encounter an AssertionError:

AssertionError: Duplicate registrations for type 'experimentalOptimizer'

Some of the stacktrace is shown below:

I upgraded TensorFlow but it didn't work. What should I do to fix it?

System Details

• Windows OS
• Spyder IDE
• Anaconda 3 (base environment)

Answer 1

Same problem : I completely uninstalled the libraries (nightly...), and reinstalled the latest stable version (pip3 install tensorflow) I'm on linux, don't have your configuration, don't know which libraries are installed. Anyway I hope this helps.

So : uninstall keras, tensorboard, tensorflow, tensorflow-gpu if it's installed, idem for tb-nightly, keras-nightly, tf-nightly

Re-install without specifications tensorflow, it will take care of needed lib.