Amazon S3 repository plugin connectivity issue

[sadiesh]

Am getting the below error ,while trying to create a bucket in s3 using elasticsearch repository plugin
{
"error": {
"root_cause": [
{
"type": "sdk_client_exception",
"reason": "sdk_client_exception: Unable to load credentials from service endpoint"
}
],
"type": "repository_exception",
"reason": "[my_s3_repository] cannot create blob store",
"caused_by": {
"type": "sdk_client_exception",
"reason": "sdk_client_exception: Unable to load credentials from service endpoint",
"caused_by": {
"type": "i_o_exception",
"reason": "connect timed out"
}
}
},
"status": 500
}

[sadiesh]

Getting below error
{
"statusCode": 504,
"error": "Gateway Time-out",
"message": "Client request timeout"
}