Lỗi báo mãi không update…

Lỗi đơn giản vậy không fix được?

Fatal error: Uncaught Error: Call to undefined function GuzzleHttp\choose_handler() in /home/minhd368/public_html/wp-content/plugins/kiotvietsync/vendor/guzzlehttp/guzzle/src/HandlerStack.php:40 Stack trace: #0 /home/minhd368/public_html/wp-content/plugins/kiotvietsync/vendor/guzzlehttp/guzzle/src/Client.php(65): GuzzleHttp\HandlerStack::create() #1 /home/minhd368/public_html/wp-content/plugins/kiotvietsync/includes/services/class-kiotviet-sync-services-products.php(36): GuzzleHttp\Client->__construct() #2 /home/minhd368/public_html/wp-content/plugins/kiotvietsync/includes/class-kiotviet-sync.php(175): Kiotviet_Sync_Service_Product->__construct() #3 /home/minhd368/public_html/wp-content/plugins/kiotvietsync/includes/class-kiotviet-sync.php(224): Kiotviet_Sync->hook_product() #4 /home/minhd368/public_html/wp-content/plugins/kiotvietsync/includes/class-kiotviet-sync.php(34): Kiotviet_Sync->define_admin_hooks() #5 /home/minhd368/public_html/wp-content/plugins/kiotvietsync/kiotviet-sync.php(48): Kiotviet_Sync->__construct() #6 /home/minhd368/public_html/wp-admin/includes/plugin.php(2314): include_once(‘/home/minhd368/…’) #7 /home/minhd368/public_html/wp-admin/plugins.php(192): plugin_sandbox_scrape() #8 {main} thrown in /home/minhd368/public_html/wp-content/plugins/kiotvietsync/vendor/guzzlehttp/guzzle/src/HandlerStack.php on line 40