diff --git a/src/Domain/Process/OAuth2/GrantAccessByOAuth2TokenProcess.php b/src/Domain/Process/OAuth2/GrantAccessByOAuth2TokenProcess.php
index 43ce5d1..c62a7f5 100644
--- a/src/Domain/Process/OAuth2/GrantAccessByOAuth2TokenProcess.php
+++ b/src/Domain/Process/OAuth2/GrantAccessByOAuth2TokenProcess.php
@@ -22,10 +22,12 @@
 use Exception;
 use Lcobucci\JWT\Token\RegisteredClaims;
 use Psr\Log\LoggerInterface;
-use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
+use Symfony\Contracts\HttpClient\Exception\ExceptionInterface;
+use Symfony\Contracts\HttpClient\Exception\HttpExceptionInterface;
 use Throwable;
 
 final class GrantAccessByOAuth2TokenProcess
@@ -125,6 +127,27 @@ public function createRedirectResponseForRequest(Request $request, UserOAuthLogi
     private function logException(Request $request, Throwable $throwable): void
     {
         $context = $this->contextFactory->buildFromRequest($request);
+
+        $content = $throwable->getTraceAsString();
+        $prevException = $throwable->getPrevious();
+        if ($prevException) {
+            $content .= "\nPrevious exception:\n" . $prevException->getTraceAsString();
+        }
+        if ($prevException instanceof HttpExceptionInterface) {
+            $response = $prevException->getResponse();
+            try {
+                $context
+                    ->setHttpStatus($response->getStatusCode())
+                    ->setResponse($response->getContent())
+                ;
+            } catch (ExceptionInterface $responseException) {
+                $context
+                    ->setResponse(sprintf('Failed to retrieve a response content! (error: %s)', $responseException->getMessage()))
+                ;
+            }
+        }
+
+        $context->setContent($content);
         $arrayContext = $this->serializer->toArray($context);
         if (false === is_array($arrayContext)) {
             $arrayContext = [];
diff --git a/src/Security/Authentication/ApiTokenAuthenticator.php b/src/Security/Authentication/ApiTokenAuthenticator.php
index af60d68..190b8d2 100644
--- a/src/Security/Authentication/ApiTokenAuthenticator.php
+++ b/src/Security/Authentication/ApiTokenAuthenticator.php
@@ -58,10 +58,15 @@ public function onAuthenticationFailure(Request $request, AuthenticationExceptio
 
     private function getCredentials(Request $request): array
     {
-        return u((string) $request->headers->get('Authorization'))
+        $credentials = u((string) $request->headers->get('Authorization'))
             ->replaceMatches('~Bearer[\s+]~', '')
             ->trim()
             ->split(':', 2);
+        if (2 === count($credentials)) {
+            return $credentials;
+        }
+
+        return [null, null];
     }
 
     private function checkCredentials(string $token, ApiTokenUserInterface $user): bool