Blackbook::BadCredentialsError: Must be authenticated to access contacts

Hi,

i get

Blackbook::BadCredentialsError: Must be authenticated to access
contacts.
from /home/hemanth/5latest/2_0_branch/vendor/plugins/cheald-blackbook/
lib/blackbook/importer/gmail.rb:58:in scrape_contacts' from /home/hemanth/5latest/2_0_branch/vendor/plugins/cheald-blackbook/ lib/blackbook/importer/page_scraper.rb:30:infetch_contacts!’
from /home/hemanth/5latest/2_0_branch/vendor/plugins/cheald-blackbook/
lib/blackbook/importer/base.rb:29:in import' from /home/hemanth/5latest/2_0_branch/vendor/plugins/cheald-blackbook/ lib/blackbook.rb:32:inexport’
from /home/hemanth/5latest/2_0_branch/vendor/plugins/cheald-blackbook/
lib/blackbook.rb:56:in get' from /home/hemanth/5latest/2_0_branch/vendor/plugins/cheald-blackbook/ lib/blackbook.rb:16:inget’

from the console.