[Errno 2] No such file or directory, new

The little you have shared makes it difficult to tell that. What other answers? What matched what was said there and didn’t match for yours? A screenshot of a portion of the traceback is not providing us much to go on. What is the result of querying where the file is using ls and %cd and pwd? That is what we should see as code text in the post. Also what is the code you are thing to run. It need only be two lines but we need to see it in addition to that other information.
Please look at posts where people got useful answers along these lines, both here and on StackOverflow (search ‘jupyter csv open’ as the terms there) and model yours on that.
Please read and follow the guidance at Getting good answers to your questions.