Credentials must be an instance of Aws\Credentials\CredentialsInterface

[Levon770]

Configuring like in readme throws error

'components' => [
    // ...
    's3' => [
        'class' => 'frostealth\yii2\aws\s3\Service',
        'credentials' => [ // Aws\Credentials\CredentialsInterface|array|callable
            'key' => 'my-key',
            'secret' => 'my-secret',
        ],
        'region' => 'my-region',
        'defaultBucket' => 'my-bucket',
        'defaultAcl' => 'public-read',
    ],
    // ...
],

Credentials must be an instance of Aws\Credentials\CredentialsInterface

Based on this, the config should be

'components' => [
    // ...
    's3' => [
        'class' => 'frostealth\yii2\aws\s3\Service',
        'credentials' => new Aws\Credentials\Credentials('my-key',  'my-secret'),
        'region' => 'my-region',
        'defaultBucket' => 'my-bucket',
        'defaultAcl' => 'public-read',
    ],
    // ...
],

[Levon770]

issue also reported at main repository (frostealth/yii2-aws-s3)
frostealth#49

[bpanatta]

Thanks @Levon770 this might be due to the upgrade of the aws libraries, I will updated the docs on it.

Also, I'd recommend attaching up a IAM role to your EC2 instance and removing this credential parameter (as stated below that piece of code in the docs).