Amazon S3,aws for android

i am using amazon web service. i faced some error : 1. Caught an AmazonClientException, which means the client encountered an internal error while trying to communicate with S3, such as not being able to access the network 2.Error Message: Unable to calculate MD5 hash: /res/drawable/test1.jpg: open failed: ENOENT (No such file or directory)

please see my problem and provide me result.