[google-cloud-sql-discuss] Access denied for user 'root'@'%' (using password: YES) with mysql hosted in GCP

I have created a GCP SQL Instance and trying to load a CSV file into mysql table using below query.

    LOAD DATA  INFILE 'D:/test.csv' 

    INTO TABLE discounts 

    FIELDS TERMINATED BY ',' 

    ENCLOSED BY '"'

    LINES TERMINATED BY '\n'

    IGNORE 1 ROWS

    (title,@expired_date,amount)

    SET expired_date = STR_TO_DATE(@expired_date, '%m/%d/%Y');

But getting below error.

Error Code: 1045. Access denied for user 'root'@'%' (using password: YES) 

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