Callbacks not working

After calling modelCheckPoint callback, it is throwing a warning as shown below and my best model is not saving.

Kindly resolve my doubt it so I can move forward.

hey @rishitagoel13 ,
Sorry , there was some issue , due to which i was not able to respond.
can you please share your notebook with me ?

Sure! https://colab.research.google.com/drive/13ho9fqZ5CWFt9ZDfU0rC2n38tiB_RR6Q?usp=sharing

kindly allow me the access to view it

Kindly check if you can access it now. I changed the settings.

Just remove the save freq parameter and it will work.

You care actually trying to save model at each iteration in an epoch , not after epoch