If you are using the HTTPS protocol for Git operations
And when user cloning any repo so basically showing this are the error show => :
Cloning into 'demorepo'…
Password for 'https://rmakwanakrishnainfotechsoftware@bitbucket.org': ****
remote: Bitbucket Cloud recently stopped supporting account passwords for Git authentication.
remote: App passwords are recommended for most use cases and can be created in your Personal settings:
remote: https://bitbucket.org/account/settings/app-passwords/
fatal: Authentication failed for 'https://bitbucket.org/rmakwanakrishnainfotechsoftware//demorepo.git/'