Getting some redundant words in text summarisation

I am using facebook/bart-large-cnn model for text summarization. However, after getting the output, I get some redundant words like:-
“…“.” ‘.’ ‘‘’. ‘I’m sorry,’’ ‘I can’t.”
in the beginning of my output. Can anyone explain why am I getting such words?
Also, as I said, these words are only in the beginning and after that I get a correct summarization.