请帮助我解决，我已经在Amazon s3中创建了一个存储桶以存储用户的个人资料照片。

我已经安装了aws SDK，还编写了硬编码以访问Amazon s3，但是不幸的是，我遇到了错误-

  

类型：InvalidArgumentException

     

消息：凭据必须是的实例   Aws \ Credentials \ CredentialsInterface，一个关联数组   包含“密钥”，“秘密”和一个可选的“令牌”键值对，   凭据提供程序功能，或者为false。

这是我的代码

public function user_profile_picture_upload()
 {  


    if (empty($_FILES['newUserProfilePic']['name'])) 
    {
        // $this->load->view('app/users/user_profile_picture_view');
    }
    else 
    {
        $random_string = random_string('alnum',3);

        $name = $_FILES['newUserProfilePic']['name'];
        $size = $_FILES['newUserProfilePic']['size'];
        $tmp = $_FILES['newUserProfilePic']['tmp_name'];

        $bucket = 'geetables-profile-picture';

        if(!empty($tmp)){ // If Attachment Exist

            $options = [
                'region'            => 'us-west-1','version'           => 'latest','signature_version' => 'v4','credentials' => [
                    'key'    => $this->config->item('key
                        ','product_config'),'secret' => $this->config->item('secret
                        ','product_config')]
                ];

                $s3Client = new S3Client($options);

                $image_name = $random_string.$name;

                $file_uploaded = $s3Client->putObject([
                    'Bucket'     => $bucket,'Key'        => $image_name,'SourceFile' => $tmp,'ACL'      => 'public-read'
                ]);

                $image_path = $file_uploaded['ObjectURL'];

                if ($_FILES['newUserProfilePic']['error'] == 0) 
                {

                    $profile_pic_indexed = $this->users_model->upload_profile_pic($image_path);

                    $data['msg'] = '<div class="alert alert-success">Profile picture uploaded</div>';
                }
                else {
                    $data['msg'] = '<div class="alert alert-danger">There was an error,please try again</div>';
                }
            }
            $this->load->view('app/header/header_new');
            $this->load->view('app/users/user_profile_picture_view',$data);
            $this->load->view('app/footer/footer_new'); 

        }

        $this->load->view('app/header/header_new');
        $this->load->view('app/users/user_profile_picture_view');
        $this->load->view('app/footer/footer_new');
    }
}