We recently switch servers from one EC2 instance to another to host Qlik Replicate. We using same EC2 Iam Role from previous server on new server  to connect Qlik Replicate to an S3 bucket but I am getting error below.

SYS-E-HTTPFAIL, Failed to connect to bucket'XXX',
SYS,GENERAL_EXCEPTION,Failed to connect to bucket 'XXX'.,Failed to stat S3 bucket 'XXX' AWS get bucket location failed: Access Denied

What could be the problem here?I will appreciate any guidance.