Hey @nneka-oguh1 
Welcome to the Postman Community! 
As this problem was raised over 2 years ago, I don’t know the full context and I’m unable to provide any help on there one.
If you’re having an issue installing Postman’s latest version, I can try and help with that if you can share all the details. 
Postman can be downloaded directly from our Downloads page on the website:
We also have an official download channel on Snapcraft for Linux distros
If you’re using vscode, you can also download our extension from here: