[2018-12-31 10:44:59] klarnaDebugLogger.ERROR: Bad Response: Client error: `POST https://api.playground.klarna.com/payments/v1/sessions` resulted in a `400 Bad Request` response:
{
  "error_code" : "BAD_VALUE",
  "error_messages" : [ "Bad value: purchase_currency" ],
  "correlation_id" : "b78345bf- (truncated...)
 [] []
[2018-12-31 10:44:59] klarnaDebugLogger.ERROR: {"purchase_country":"US","purchase_currency":"USD","locale":"en-US","order_amount":100500,"order_tax_amount":0,"order_lines":[{"type":"physical","reference":"Syringe","name":"Syringe","quantity":1,"product_url":"http:\/\/127.0.0.1\/Mage225\/syringe.html","image_url":"http:\/\/127.0.0.1\/Mage225\/pub\/media\/catalog\/product\/b\/d\/bd_emerald_syringe_307728_press.jpg","tax_rate":0,"total_tax_amount":0,"unit_price":100000,"total_amount":100000},{"type":"shipping_fee","reference":"flatrate_flatrate","name":"Shipping & Handling","quantity":1,"unit_price":500,"tax_rate":0,"total_amount":500,"total_tax_amount":0}],"merchant_urls":{"confirmation":"https:\/\/127.0.0.1\/Mage225\/checkout\/onepage\/success","notification":"https:\/\/127.0.0.1\/Mage225\/klarna\/api\/notification"},"options":{"color_details":"#0072CC","color_button":"#0072CC","color_button_text":"#0072CC","color_checkbox":"#0072CC","color_checkbox_checkmark":"#0072CC","color_header":"#0072CC","color_link":"#0072CC","color_border":"#0072CC","color_border_selected":"#0072CC","color_text":"#0072CC","color_text_secondary":"#0072CC"}} [] []
[2018-12-31 10:44:59] klarnaDebugLogger.ERROR: 400 Bad Request [] []
[2018-12-31 10:44:59] klarnaDebugLogger.DEBUG: Array
(
    [REQUEST] => Array
        (
            [headers] => Array
                (
                    [User-Agent] => Magento2_KP/5.2.3;Core/4.2.3;OM/4.1.3;Guzzle/6.3.3;PHP/7.0.27 (Magento Community/2.2.5 default mode)
                    [Accept] => */*
                )

            [body] => Array
                (
                    [error_code] => BAD_VALUE
                    [error_messages] => Array
                        (
                            [0] => Bad value: purchase_currency
                        )

                    [correlation_id] => b78345bf-d4a3-40ff-ad65-b1286f085d42
                    [response_object] => Array
                        (
                            [headers] => Array
                                (
                                    [Content-Type] => Array
                                        (
                                            [0] => application/json
                                        )

                                    [Date] => Array
                                        (
                                            [0] => Mon, 31 Dec 2018 10:44:59 GMT
                                        )

                                    [Klarna-Correlation-Id] => Array
                                        (
                                            [0] => b78345bf-d4a3-40ff-ad65-b1286f085d42
                                        )

                                    [Render-Time] => Array
                                        (
                                            [0] => 5
                                        )

                                    [Server] => Array
                                        (
                                            [0] => openresty
                                        )

                                    [Strict-Transport-Security] => Array
                                        (
                                            [0] => max-age=31536000; includeSubDomains
                                        )

                                    [Content-Length] => Array
                                        (
                                            [0] => 150
                                        )

                                    [Connection] => Array
                                        (
                                            [0] => keep-alive
                                        )

                                )

                            [body] =>
                        )

                    [response_status_code] => 400
                    [response_status_message] => Bad Request
                )

        )

)
 {"klarna_id":null,"action":"/payments/v1/sessions"} []
[2018-12-31 10:44:59] klarnaDebugLogger.DEBUG: Array
(
    [RESPONSE] => Array
        (
            [is_successful] =>
            [response_status_code] => 400
            [response_status_message] => Bad Request
            [error_code] => BAD_VALUE
            [error_messages] => Array
                (
                    [0] => Bad value: purchase_currency
                )

            [correlation_id] => b78345bf-d4a3-40ff-ad65-b1286f085d42
            [response_object] => Array
                (
                    [headers] => Array
                        (
                            [Content-Type] => Array
                                (
                                    [0] => application/json
                                )

                            [Date] => Array
                                (
                                    [0] => Mon, 31 Dec 2018 10:44:59 GMT
                                )

                            [Klarna-Correlation-Id] => Array
                                (
                                    [0] => b78345bf-d4a3-40ff-ad65-b1286f085d42
                                )

                            [Render-Time] => Array
                                (
                                    [0] => 5
                                )

                            [Server] => Array
                                (
                                    [0] => openresty
                                )

                            [Strict-Transport-Security] => Array
                                (
                                    [0] => max-age=31536000; includeSubDomains
                                )

                            [Content-Length] => Array
                                (
                                    [0] => 150
                                )

                            [Connection] => Array
                                (
                                    [0] => keep-alive
                                )

                        )

                    [body] =>
                )

            [exception_code] => 400
        )

)