Prestashop Error fix on checkout last page and email notification sent

I have upgraded my online prestashop store and now am receiving error on last checkout page.

Am getting this error after upgrade, and now am stuck! i just want it to fix it.

this error 500 came up.

I want to fix this error and the notification email been sent to the customer.

Additional information

PrestaShop version: 1.7.6.9

PHP version: 7.2

This is what show up in debug mode:

(1/1) UndefinedFunctionExceptionAttempted to call function "idn_to_ascii" from the global namespace.

in [login to view URL] line 898

at MailCore::toPunycode('c_cesar007@[login to view URL]')in [login to view URL] line 323

at MailCore::send(3, 'bankwire', 'A aguardar tranferência bancária', array('{lastname}' => 'AL', '{firstname}' => 'CA', '{id_order}' => 44, '{order_name}' => 'CPIRGFCEP', '{followup}' => '', '{shipping_number}' => '', '{bankwire_owner}' => 'Machado e Almeida, Lda', '{bankwire_details}' => 'Bai 32940209503950429', '{bankwire_address}' => 'Bai 0593409320r94', '{total_paid}' => 'Kz 18.400,22'), 'c_cesar007@[login to view URL]', 'CA AL', 'apoio@[login to view URL]', 'mambbus', null, null, '/hermes/bosnacweb05/bosnacweb05bd/b2758/[login to view URL]', false, 1)in [login to view URL] line 552

at OrderHistoryCore->sendEmail(object(Order), array('{bankwire_owner}' => 'Machado e Almeida, Lda', '{bankwire_details}' => 'Bai 32940209503950429', '{bankwire_address}' => 'Bai 0593409320r94'))in [login to view URL] line 468

at OrderHistoryCore->addWithemail(true, array('{bankwire_owner}' => 'Machado e Almeida, Lda', '{bankwire_details}' => 'Bai 32940209503950429', '{bankwire_address}' => 'Bai 0593409320r94'))in [login to view URL] line 557

at PaymentModuleCore->validateOrder(116, '10', 18400.22, 'Pagamento por transferência bancária', null, array('{bankwire_owner}' => 'Machado e Almeida, Lda', '{bankwire_details}' => 'Bai 32940209503950429', '{bankwire_address}' => 'Bai 0593409320r94'), 4, false, '9e8d18af356fec5fbd2a8af96b6d7103')in [login to view URL] line 58

at Ps_WirepaymentValidationModuleFrontController->postProcess()in [login to view URL] line 281

at ControllerCore->run()in [login to view URL] line 515

at DispatcherCore->dispatch()in [login to view URL] line 28

Everything else in store its working fine, i just want this to be fixed and nothing else.

Kĩ năng: Prestashop, PHP, eCommerce, HTML, MySQL

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ID dự án: #28278980