Callbacks method `on_train_batch_end` is slow compared to the batch time; but there is no callbacks

🤗Transformers
1

Hi
I use TFElectra model and try to fine tune this model with my dataset but I got this:
WARNING:tensorflow:Callbacks method on_train_batch_end is slow compared to the batch time (batch time: 0.0020s vs on_train_batch_end time: 9.4864s). Check your callbacks.
I don’t have any callbacks and I use google colab TPUs.