Dimension mismatch Error

[SSwethaSel0609]

I have downloaded the pretrained model from icefall. I have tried to finetune the model in zipformer using my own data. It is showing mismatch error. I have attached the error file
error.txt

[csukuangfj]

From your error log:

        size mismatch for encoder.encoders.0.layers.0.self_attn_weights.in_proj.weight: copying a param with shape torch.Size([272, 192]) from checkpoint, the shape in current model is torch.Size([544, 192]).

The first thing you have to do is to find out the exact parameters used to train the model that you are using for finetuing.

[SSwethaSel0609]

I solved that error. Can you please tell me this isse?
File "finetune.py", line 1121, in train_one_epoch
cur_grad_scale = scaler._scale.item()
AttributeError: 'GradScaler' object has no attribute '_scale'