Fatal error: Uncaught Symfony\Component\Serializer\Exception\InvalidArgumentException in /app/vendor/jolicode/slack-php-api/generated/Normalizer/ChatPostMessagePostResponse200Normalizer.php:40 Stack trace: #0 /app/vendor/symfony/serializer/Serializer.php(238): JoliCode\Slack\Api\Normalizer\ChatPostMessagePostResponse200Normalizer->denormalize(Array, 'JoliCode\\Slack\\...', 'json', Array) #1 /app/vendor/symfony/serializer/Serializer.php(151): Symfony\Component\Serializer\Serializer->denormalize(Array, 'JoliCode\\Slack\\...', 'json', Array) #2 /app/vendor/jolicode/slack-php-api/generated/Endpoint/ChatPostMessage.php(115): Symfony\Component\Serializer\Serializer->deserialize(Array, 'JoliCode\\Slack\\...', 'json') #3 /app/vendor/jane-php/open-api-runtime/Client/Psr7HttplugEndpointTrait.php(20): JoliCode\Slack\Api\Endpoint\ChatPostMessage->transformResponseBody('{"ok":true,"cha...', 200, Object(Symfony\Component\Serializer\Serializer), 'application/jso...') #4 /app/vendor/jane-php/open-api-runtime/Client/Psr7HttplugClient.php( in /app/vendor/jolicode/slack-php-api/generated/Normalizer/ChatPostMessagePostResponse200Normalizer.php on line 40