That kind of context does not really help. Please show us:

1. "this analysis" - do you mean just the exact line of code above or is there more to it that you're just summarizing here?
2. "exact same Data frame" - unless your friend ran the analysis on the same R session you're using right now immediately before you, there is no "exact same Data frame".
3. "without any error" - we could take your word for this but showing some sort of code + example input + output will actually help.

So the only context here is that your friend ran some code on some machine and it worked and you are trying to run similar code but are running into problems. Show us your full code and excerpts from your data frame or better yet, sit with your friend and compare notes.