opencart install theme error

hi, I have install the themeforest-9202657-lexus-carebeauty-opencart-theme, but during opencart installation step 3, it cannot proceed and occur this error “mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication. Please use an administration tool to reset your password with the command SET PASSWORD = PASSWORD(‘your_existing_password’). This will store a new, and more secure, hash value in mysql.user. If this user is used in other scripts executed by PHP 5.2 or earlier you might need to remove the old-passwords flag from your my.cnf file opencart” .

Anyone know how to solve? my opencart version is