Credentials helper error still appearing in 3.3.9

[School-learner]

I got this error message in sourcetree 3.3.8. I followed another person's solution by removing files in c:\users\<profile name>\atlassian & c:\users\<profile name>\sourcetree and it worked. But in 3.3.9, the same pop up message appears. I wish to ask if there's a different solution. I'm pasting the screenshot in case someone thinks there's a different solution.

[DTech]

From Powershell, navigate to

%localappdata%\Atlassian\SourceTree\git_local\mingw32\bin\

#run

./git.exe config --edit --system

#opens config in VI editor

#update [credential] helper

[credential]
helper = manager

Esc

:wq

[School-learner]

Thank you but is your solution from the support team or you discovered this on your own? Where is this config file located? Can I edit it using notepad?

I have another bigger problem. See this link. https://community.atlassian.com/t5/Sourcetree-questions/Persistent-github-and-credentials-popup-after-multiple-uninstall/qaq-p/1538633#M37579