Error in running DQN Solution

[kdu4108]

Without making any changes to the solution, when I start the kernel & run the whole Jupyter Notebook, I'm getting this weird error:

NotFoundError (see above for traceback): Key q_estimator/Conv/biases not found in checkpoint

Has anyone else seen this/know a possible fix? Thanks!

[chaonan99]

Seems like you already have a checkpoint? Maybe clean up you directory and run again. (If that not the case, please provide the full error message.)