update _votingapi_vote' doesn't exist query

Hi i have try to update the voting api..get these errors

* user warning: Table 'db_db_votingapi_vote' doesn't exist query: ALTER TABLE db_db_votingapi_vote DROP INDEX content in ./includes/database.mysql-common.inc on line 448.
* user warning: Table 'db_db_votingapi_vote' doesn't exist query: ALTER TABLE db_db_votingapi_vote DROP INDEX content_vtype in ./includes/database.mysql-common.inc on line 448.

The following queries were executed
votingapi module
Update #6101

* Failed: ALTER TABLE {{votingapi_vote}} DROP INDEX content
* Failed: ALTER TABLE {{votingapi_vote}} DROP INDEX content_vtype
* ALTER TABLE {votingapi_vote} ADD INDEX content_uid_2 (content_type, uid)