SageMaker Canvas connect Redshift failed

Try to add the Redshift connection on SageMaker Canvas to import the data

• The cluster identify: redshift-cluster-1
• database name: dev
• database user: awsuser
• unload IAM Role: my-reshift-role
• connection name: redshift
• type: IAM

my-reshift-role trust-relationship is trust the "redshift.amazonaws.com" and "sagemaker.amazonaws.com"

Expectation: create connection successfully

Actually result: RedshiftCreateConnectionError Unable to validate connection. An error occurred when trying to list schema from Redshift