Importing a csv file from s3 into rds PostgreSQL Database > Error: schema "aws_commons does not exist

The following are the steps I have taken:

Followed the guide to create and connect PostgreSQL Database > https://aws.amazon.com/getting-started/tutorials/create-connect-postgresql-db/ > this was successful.

Followed

1. Install the required PostgreSQL extensions. These include the aws_s3 and aws_commons extensions.
   CREATE EXTENSION aws_s3 CASCADE;
2. Identify the database table and Amazon S3 file to use.
   CREATE TABLE t1 (col1 varchar(80), col2 varchar(80), col3 varchar(80));
   
3. Use the aws_commons.create_s3_uri function to create an aws_commons._s3_uri_1 structure to hold the Amazon S3 file information.
   SELECT aws_commons.create_s3_uri( 'random', 'test.csv', 'us-east-1' ) AS s3_uri

Error: schema "aws_commons does not exist"

When I run the following code to identify extensions: Select * from pg_available_extensions where name like '%aws%'

4.IAM

• Created an IAM policy that provides access to the Amazon S3 bucket(Service:S3, Access level:List,read,write,tagging,permission management).
  
• Created an IAM role and attached the policy to the role.
  
• Then assigned the IAM role to the DB instance.