Bertscore not working for Hindi language

[agrawalanshul053]

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using torch==1.5.1 using transformers==3.0.1

using bert-score==0.3.4

P, R, F1 = score(cands, refs, lang='hi', model_type='bert-base-multilingual-cased')

Above line of code is giving the below error. I have tried transformer version 4.5.1 and 4.10

AttributeError: 'BertTokenizerFast' object has no attribute 'max_len'