Warning: Undefined variable $order_id in /home/twinair/public_html/pub/webservices/thank-you/index.php on line 38

Fatal error: Uncaught Magento\Framework\Exception\InputException: An ID is needed. Set the ID and try again. in /home/twinair/public_html/vendor/magento/module-sales/Model/OrderRepository.php:139 Stack trace: #0 /home/twinair/public_html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Sales\Model\OrderRepository->get(NULL) #1 /home/twinair/public_html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Sales\Model\OrderRepository\Interceptor->___callParent('get', Array) #2 /home/twinair/public_html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Sales\Model\OrderRepository\Interceptor->Magento\Framework\Interception\{closure}(NULL) #3 /home/twinair/public_html/generated/code/Magento/Sales/Model/OrderRepository/Interceptor.php(23): Magento\Sales\Model\OrderRepository\Interceptor->___callPlugins('get', Array, Array) #4 /home/twinair/public_html/pub/webservices/thank-you/index.php(38): Magento\Sales\Model\OrderRepository\Interceptor->get(NULL) #5 {main} thrown in /home/twinair/public_html/vendor/magento/module-sales/Model/OrderRepository.php on line 139