Can't load weights when training the model

[khatchad]

I'm getting the following error when trying to train the model:

Traceback (most recent call last):                                                                                                                                                                                                                                                                                                                   
  File "/home/user/git/Python-Subjects/tf-eager-fasterrcnn/train_model.py", line 73, in <module>                                                                                                                                                                                                                                                   
    model.load_weights('weights/faster_rcnn.h5', by_name=True)                                                                                                                                                                                                                                                                                       
  File "/home/user/.local/lib/python3.10/site-packages/keras/utils/traceback_utils.py", line 67, in error_handler                                                                                                                                                                                                                                  
    raise e.with_traceback(filtered_tb) from None                                                                                                                                                                                                                                                                                                    
  File "/home/user/.local/lib/python3.10/site-packages/keras/engine/training.py", line 2644, in load_weights                                                                                                                                                                                                                                       
    raise ValueError(                                                                                                                                                                                                                                                                                                                                
ValueError: Unable to load weights saved in HDF5 format into a subclassed Model which has not created its variables yet. Call the Model first, then load the weights. 

I have the dataset in place. I am using TensorFlow 2.9.3.

[Viredery]

Before loading weights, this line must be executed:

_ = model((batch_imgs, batch_metas), training=False)

[khatchad]

Yup, it's number 8 in https://github.com/Viredery/tf-eager-fasterrcnn/blob/0afe472d9437ae76debbc5bb27b8ec43719ce8f5/train_model.ipynb.

I noticed that that directory (weights) is empty, i.e., there is no 'weights/faster_rcnn.h5 after the execution. I also tried putting the prebuilt file from your Google Drive there, but I get the same error.

Could it have something to do with the TF version?

[khatchad]

Actually, since we are training from scratch in that file, I think we can avoid loading the weights.