# Find the valid credentials
valid_creds = self.api.auth.checkCredentials(creds, 'renewsliver', urns,
- check_sliver_callback = self.api.manager.driver.check_sliver_credentials)
+ check_sliver_callback = self.api.driver.check_sliver_credentials)
# Validate that the time does not go beyond the credential's expiration time
requested_time = utcparse(expiration_time)