Dec-02-2019, 09:35 PM
Hi Dear
I am beginner but I got same problem from a few days ago.
I think I update anaconda and openpyxl version(3.0.2) and then this problem begin to happen.
but xlswwriter works well.
I solve this problem from downgrade openpyxl version(2.6.3)
after downgrade, this message gone and work properly.
down grade process
1. pip uninstall openpyxl
2. pip install openpyxl==2.6.3
3. after computer restart , everything is ok
(PS) I did downgrade only openpyxl.
I hope you can solve this problem.
I am beginner but I got same problem from a few days ago.
I think I update anaconda and openpyxl version(3.0.2) and then this problem begin to happen.
but xlswwriter works well.
I solve this problem from downgrade openpyxl version(2.6.3)
after downgrade, this message gone and work properly.
down grade process
1. pip uninstall openpyxl
2. pip install openpyxl==2.6.3
3. after computer restart , everything is ok
(PS) I did downgrade only openpyxl.
I hope you can solve this problem.