unable to open notebook as saying i am trying to close an unsaved notbook
i am doing a Python for Data Science course on edX and cannot open one of the notebooks as I keep getting "File "PY0101EN-1.3notebookquizzStringOperations.ipynb" has unsaved changes, close without saving?"
no matter if I press OK or Cancel, i still cannot open it and continue with my study. I have tried clearing cache and rebooting the machine. Tried closing unsaved and re-opening, still says i have an unsaved notebook that i am trying to close. Stuck here, any ideas?