When I submit authorizeAndCapture (AuthorizeNetAIM) on sandbox it gives me this " Error connecting to AuthorizeNet" message. Is the sandbox down? I'm experiencing this since yesterday.

AuthorizeNetAIM_Response Object

(

    [_response_array:AuthorizeNetAIM_Response:private] => Array

        (

        )

    [approved] =>

    [declined] =>

    [error] => 1

    [held] =>

    [response_code] =>

    [response_subcode] =>

    [response_reason_code] =>

    [response_reason_text] =>

    [authorization_code] =>

    [avs_response] =>

    [transaction_id] =>

    [invoice_number] =>

    [description] =>

    [amount] =>

    [method] =>

    [transaction_type] =>

    [customer_id] =>

    [first_name] =>

    [last_name] =>

    [company] =>

    [address] =>

    [city] =>

    [state] =>

    [zip_code] =>

    [country] =>

    [phone] =>

    [fax] =>

    [email_address] =>

    [ship_to_first_name] =>

    [ship_to_last_name] =>

    [ship_to_company] =>

    [ship_to_address] =>

    [ship_to_city] =>

    [ship_to_state] =>

    [ship_to_zip_code] =>

    [ship_to_country] =>

    [tax] =>

    [duty] =>

    [freight] =>

    [tax_exempt] =>

    [purchase_order_number] =>

    [md5_hash] =>

    [card_code_response] =>

    [cavv_response] =>

    [account_number] =>

    [card_type] =>

    [split_tender_id] =>

    [requested_amount] =>

    [balance_on_card] =>

    [response] =>

    [error_message] => Error connecting to AuthorizeNet

)