WARNING:tensorflow:Learning rate reduction is conditioned on metric val_loss which is not available. Available metrics are: loss,acc,lr

[accj1990]

System Information

• your operating system: Colab
• your python version (python -version): Python 3.9
• keras video generator version (pip freeze | grep keras-video-generators): !pip install git+https://github.com/metal3d/keras-video-generators.git

Describe the bug

I get this error message in a code that worked before, has recently stopped working. Can you tell me what might be causing the loss validation not to be calculated ? And how can I adjust it?

7/7 [==============================] - ETA: 0s - loss: 1.4450 - acc: 0.2879WARNING:tensorflow:Early stopping conditioned on metric val_loss which is not available. Available metrics are: loss,acc
WARNING:tensorflow:Learning rate reduction is conditioned on metric val_loss which is not available. Available metrics are: loss,acc,lr