I am trying to integrate AWS PHP SDK for codeigniter

But its showing error as follows

```
An uncaught Exception was encountered
Type: Aws\Exception\CredentialsException

Message: Cannot read credentials from /.aws/credentials

Filename: /var/www/html/aws/Aws/Credentials/CredentialProvider.php

```

And on cli getting an error as
-bash: /root/.aws/credentials: Permission denied

So after this i have allowed permission ... cli error has gone but php error Cannot read credentials from /.aws/credentials still remain.

Please help to solve this issue.

Thanks!