Cant able to launch Jupter notebook

I installed anaconda3 and launched Jupyter notebook from Anaconda Navigator. But Jupyter Notebook is not launching and throwing me the error message.

Traceback (most recent call last):
File “C:\Users<mysystemusername>\AppData\Local\anaconda3\Scripts\jupyter-notebook-script.py”, line 6, in
from notebook.notebookapp import main
ModuleNotFoundError: No module named ‘notebook.notebookapp’

I have tried uninstalling and re-installing again, still displaying the same error message. much appreciate if someone can help me with this issue

I am facing same error,I tried every method but none works,please if anybody know about this help