Traceback: DQN expects a model that has one dimension for each action, in this case 3.

[dlemosmartins]

Making all the changes to the PIP code to run, this is not the first time this error has occurred:

Traceback (most recent call last):
File "y:/python_udemy/deep_rl_trader-master/deep_rl_trader/ddqn_rl_trader.py", line 80, in
main()
File "y:/python_udemy/deep_rl_trader-master/deep_rl_trader/ddqn_rl_trader.py", line 59, in main
processor=NormalizerProcessor())
File "C:\Users\danilo.martins\Anaconda3\lib\site-packages\rl\agents\dqn.py", line 111, in init
raise ValueError('Model output "{}" has invalid shape. DQN expects a model that has one dimension for each action, in this case {}.'.format(model.output, self.nb_actions))
ValueError: Model output "Tensor("dense_2/BiasAdd:0", shape=(?, 3), dtype=float32)" has invalid shape. DQN expects a model that has one dimension for each action, in this case 3.

What am I doing wrong, you know?
That's what I just tried to give the RUN to see how it would work here.

[puke3615]

I think you need set your model output layer's shape from (None, 3) to (None, 1).

[jacobbondy]

Did you ever find the solution? Currently struggling with this