启动后第一次点击 synthesize and vocode 报错

执行python demo_toolbox.py -d .\samples 启动程序后，第一次点击synthesize and vocode按钮报错，之后就不报错了，不知道什么原因？
RuntimeError: Error(s) in loading state_dict for Tacotron:
size mismatch for encoder_proj.weight: copying a param with shape torch.Size([128, 512]) from checkpoint, the shape in current model is torch.Size([128, 1024]).
size mismatch for decoder.attn_rnn.weight_ih: copying a param with shape torch.Size([384, 768]) from checkpoint, the shape in current model is torch.Size([384, 1280]).
size mismatch for decoder.rnn_input.weight: copying a param with shape torch.Size([1024, 640]) from checkpoint, the shape in current model is torch.Size([1024, 1152]).
size mismatch for decoder.stop_proj.weight: copying a param with shape torch.Size([1, 1536]) from checkpoint, the shape in current model is torch.Size([1, 2048]).

Reproduce the first-click failure by running `python demo_toolbox.py -d .\samples` and using the “synthesize and vocode” button. Start with `demo_toolbox.py` and trace the Tacotron checkpoint-loading path; compare the checkpoint and current-model dimensions shown in the error. Done means the first click completes without the state-dict mismatch and later clicks still work.

Written by the indexing model from the issue text.