model.hdf5 file does not create

[AyseEe501]

First of all, I create the config.yaml file as stated in the path where the weight files are located, but I cannot create the model.hdf5 file. I do not understand where I am doing wrong.

this is the config.yaml and its content in step_30000 that i showed

Also, the alphabet comes with the symbol ". I would be very grateful if you could help me with this.

ERROR: