While launching Spyder from Anaconda Navigator or directly from the menu, it is showing the given error message: Traceback (most recent call last): File "C:\Users\charchil\anaconda3\Scripts\spyder-script.py", line 6, in from spyder.app.start import main File "C:\Users\charchil\anaconda3\lib\site-packages\spyder\app\start.py", line 22, in import zmq File "C:\Users\charchil\AppData\Roaming\Python\Python37\site-packages\zmq_init_.py", line 47, in from zmq import backend File "C:\Users\charchil\AppData\Roaming\Python\Python37\site-packages\zmq\backend_init_.py", line 40, in reraise(*exc_info) File "C:\Users\charchil\AppData\Roaming\Python\Python37\site-packages\zmq\utils\sixcerpt.py", line 34, in reraise raise value File "C:\Users\charchil\AppData\Roaming\Python\Python37\site-packages\zmq\backend_init_.py", line 27, in ns = select_backend(first) File "C:\Users\charchil\AppData\Roaming\Python\Python37\site-packages\zmq\backend\select.py", line 28, in select_backend mod = import(name, fromlist=public_api) File "C:\Users\charchil\AppData\Roaming\Python\Python37\site-packages\zmq\backend\cython_init.py", line 6, in from . import (constants, error, message, context, ImportError: cannot import name 'constants' from 'zmq.backend.cython' (C:\Users\charchil\AppData\Roaming\Python\Python37\site-packages\zmq\backend\cython_init_.py) Continue reading...