Here is the complete error:
Exception in component tGSList_1
org.jets3t.service.ServiceException: S3 Error Message. -- ResponseCode: 403, ResponseStatus: Forbidden, XML Error Message: <?xml version='1.0' encoding='UTF-8'?><Error><Code>SignatureDoesNotMatch</Code><Message>The request signature we calculated does not match the signature you provided. Check your Google secret key and signing method.</Message><StringToSign>GETTue, 19 Jul 2016 08:51:06 GMT/pms-extract/?delimiter</StringToSign></Error>