Pytorch expects each tensor to be equal size

When running this code: embedding_matrix = torch.stack(embeddings)

I got this error:

RuntimeError: stack expects each tensor to be equal size, but got [7, 768] at entry 0 and [8, 768] at entry 1

I'm trying to get embedding using BERT via:

    split_sent = sent.split()
    tokens_embedding = []
    j = 0
    for full_token in split_sent:
        curr_token = ''
        x = 0
        for i,_ in enumerate(tokenized_sent[1:]): 
            token = tokenized_sent[i+j]
            piece_embedding = bert_embedding[i+j]
            if token == full_token and curr_token == '' :
               tokens_embedding.append(piece_embedding)
               j += 1
               break                                     
    sent_embedding = torch.stack(tokens_embedding)
    embeddings.append(sent_embedding)
embedding_matrix = torch.stack(embeddings)

Does anyone know how I can fix this?

source https://stackoverflow.com/questions/71011333/pytorch-expects-each-tensor-to-be-equal-size

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