diff --git a/Api/Checkout/V2/Exception.php b/Api/Checkout/V2/Exception.php
index a942322..17c2723 100644
--- a/Api/Checkout/V2/Exception.php
+++ b/Api/Checkout/V2/Exception.php
@@ -1,5 +1,6 @@
 <?php
 namespace Dfe\Klarna\Api\Checkout\V2;
+use \Throwable as T; # 2023-08-03 "Treat `\Throwable` similar to `\Exception`": https://github.com/mage2pro/core/issues/311
 /**
  * 2017-01-26
  * @used-by \Dfe\Klarna\Api\Checkout::html()
@@ -10,8 +11,8 @@ final class Exception extends \Dfe\Klarna\Exception {
 	 * @override
 	 * @see \Dfe\Klarna\Exception::responseA()
 	 * @used-by \Dfe\Klarna\Exception::message()
-	 * @param \Exception|\Klarna_Checkout_ApiErrorException $e
+	 * @param T|\Klarna_Checkout_ApiErrorException $t
 	 * @return array(string => mixed)
 	 */
-	protected function responseA(\Exception $e):array {return $e->getPayload();}
+	protected function responseA(T $t):array {return $t->getPayload();}
 }
\ No newline at end of file
diff --git a/Api/Checkout/V3/Exception/Connector.php b/Api/Checkout/V3/Exception/Connector.php
index 5de7dd6..d53e53e 100644
--- a/Api/Checkout/V3/Exception/Connector.php
+++ b/Api/Checkout/V3/Exception/Connector.php
@@ -1,5 +1,6 @@
 <?php
 namespace Dfe\Klarna\Api\Checkout\V3\Exception;
+use \Throwable as T; # 2023-08-03 "Treat `\Throwable` similar to `\Exception`": https://github.com/mage2pro/core/issues/311
 /**
  * 2017-01-26
  * @see \Klarna\Rest\Transport\Connector::send():
@@ -13,10 +14,9 @@ class Connector extends \Dfe\Klarna\Api\Checkout\V3\Exception {
 	 * @override
 	 * @see \Dfe\Klarna\Exception::responseA()
 	 * @used-by \Dfe\Klarna\Exception::message()
-	 * @param \Exception|\Klarna\Rest\Transport\Exception\ConnectorException $e
+	 * @param T|\Klarna\Rest\Transport\Exception\ConnectorException $t
 	 * @return array(string => mixed)
-	 * @todo Ещё не реализовано, потому что у меня нет пока доступов к API версии 3:
-	 * https://mage2.pro/t/2531
+	 * @todo Ещё не реализовано, потому что у меня нет пока доступов к API версии 3: https://mage2.pro/t/2531
 	 */
-	protected function responseA(\Exception $e):array {return [];}
+	protected function responseA(T $t):array {return [];}
 }
\ No newline at end of file
diff --git a/Api/Checkout/V3/Exception/Guzzle.php b/Api/Checkout/V3/Exception/Guzzle.php
index 7d34912..69ffb72 100644
--- a/Api/Checkout/V3/Exception/Guzzle.php
+++ b/Api/Checkout/V3/Exception/Guzzle.php
@@ -2,6 +2,7 @@
 namespace Dfe\Klarna\Api\Checkout\V3\Exception;
 use GuzzleHttp\Psr7\Response;
 use Psr\Http\Message\RequestInterface as IResponse;
+use \Throwable as T; # 2023-08-03 "Treat `\Throwable` similar to `\Exception`": https://github.com/mage2pro/core/issues/311
 /**
  * 2017-01-26
  * Исключительная ситуация этого класса возбуждается в 2 случаях:
@@ -33,11 +34,11 @@ class Guzzle extends \Dfe\Klarna\Api\Checkout\V3\Exception {
 	 * @override
 	 * @see \Dfe\Klarna\Exception::responseA()
 	 * @used-by \Dfe\Klarna\Exception::message()
-	 * @param \Exception|\GuzzleHttp\Exception\ClientException $e
+	 * @param T|\GuzzleHttp\Exception\ClientException $t
 	 * @return array(string => mixed)
 	 */
-	protected function responseA(\Exception $e):array {
-		$r = $e->getResponse(); /** @var IResponse|Response $r */
+	protected function responseA(T $t):array {
+		$r = $t->getResponse(); /** @var IResponse|Response $r */
 		return ['HTTP Status Code' => $r->getStatusCode(), 'Reason' => $r->getReasonPhrase()];
 	}
 }
\ No newline at end of file
diff --git a/Exception.php b/Exception.php
index 8a9aa67..b695721 100644
--- a/Exception.php
+++ b/Exception.php
@@ -1,5 +1,6 @@
 <?php
 namespace Dfe\Klarna;
+use \Throwable as T; # 2023-08-03 "Treat `\Throwable` similar to `\Exception`": https://github.com/mage2pro/core/issues/311
 /**
  * 2017-01-26
  * @see \Dfe\Klarna\Api\Checkout\V2\Exception
@@ -12,10 +13,9 @@ abstract class Exception extends \Df\Payment\Exception {
 	 * @see \Dfe\Klarna\Api\Checkout\V2\Exception::responseA()
 	 * @see \Dfe\Klarna\Api\Checkout\V3\Exception\Guzzle::responseA()
 	 * @see \Dfe\Klarna\Api\Checkout\V3\Exception\Connector::responseA()
-	 * @param \Exception $e
 	 * @return array(string => mixed)
 	 */
-	abstract protected function responseA(\Exception $e):array;
+	abstract protected function responseA(T $t):array;
 
 	/**
 	 * 2017-01-26
@@ -24,7 +24,7 @@ abstract protected function responseA(\Exception $e):array;
 	 * @used-by \Dfe\Klarna\Api\Checkout::html()
 	 * @param array(string => mixed) $req
 	 */
-	final function __construct(\Exception $e, array $req) {$this->_req = $req; parent::__construct($e);}
+	final function __construct(T $t, array $req) {$this->_req = $req; parent::__construct($t);}
 
 	/**
 	 * 2017-01-26
@@ -40,7 +40,7 @@ final function message():string {return df_api_rr_failed($this, $this->responseA
 	 * @see \Df\Core\Exception::messageC()
 	 * @used-by \Df\Payment\PlaceOrderInternal::message()
 	 */
-	final function messageC():string {return dfp_error_message($this->prev()->getMessage());}
+	final function messageC():string {return dfp_error_message(df_xts($this->prev()));}
 
 	/**
 	 * 2017-01-26
diff --git a/Test/Charge.php b/Test/Charge.php
index cd4235f..2949050 100644
--- a/Test/Charge.php
+++ b/Test/Charge.php
@@ -33,8 +33,8 @@ function t01():void {
 				}
 			}
 		}
-		catch (\Exception $e) {
-			print_r(df_xtsd($e));
+		catch (\Throwable $t) {
+			print_r(df_xtsd($t));
 		}
 	}
 }
\ No newline at end of file
diff --git a/composer.json b/composer.json
index a91c467..691af09 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
 	"name": "mage2pro/klarna"
-	,"version": "0.5.1"
+	,"version": "0.5.2"
 	,"description": "Klarna integration with Magento 2"
 	,"type": "magento2-module"
 	,"homepage": "https://mage2.pro/c/extensions/klarna"
@@ -12,7 +12,7 @@
 		"role": "Developer"
 	}]
 	,"require": {
-		"klarna/checkout": "*", "mage2pro/core": ">=9.0.5", "mage2pro/klarna-sdk-v3": "^2.2.3", "php-http/guzzle7-adapter":  "*"
+		"klarna/checkout": "*", "mage2pro/core": ">=10.2.1", "mage2pro/klarna-sdk-v3": "^2.2.3", "php-http/guzzle7-adapter":  "*"
 	}
 	,"autoload": {"files": ["registration.php"], "psr-4": {"Dfe\\Klarna\\": ""}}
 	,"keywords": [