Magento 2: Unable to uninstall sample data in localhost

[BYK]

I have already databse imported to my localhost but I need to uninstall sample data while exciting this command: PHP bin/magento sampledata:remove from my localhost with the following below link: 

https://devdocs.magento.com/guides/v2.3/install-gde/install/cli/install-cli-sample-data-other.html 

bin/magento sampledata:remove

Here is the snapshot is for your reference.

[Manish Mittal]

@BYK 

In your Magento root folder, you will found auth.json.sample just rename it to auth.json and add your public and private key from your marketplace account.

For more you can refer this:

https://www.mageplaza.com/devdocs/magento-2-install-uninstall-sample-data.html

[BYK]

@Manish Mittal 

I have updated the file auth.json file with the latest keys and executed CLI commands but sill no luck.

Imported the recent database.