Polyfills are deprecated

[M4SX5]

I successfully set up the qr bill for my application. Nevertheless, I always get the following error message:

Deprecated: Since symfony/intl 5.3: Polyfills are deprecated, try running "composer require symfony/polyfill-intl-icu ^1.21" instead.

Is there a possibility to upgrade the dependent libraries?

[sprain]

What PHP version are you using?
Are there any other dependencies in your project?

[M4SX5]

Hi Sprain
Thank you very much for your answer. I'm working with different versions of php 8 (currently 8.0.10). The deprecated warning occurs with on all versions. There are several other dependencies in my project. Below you find a list of the dependencies:

"payrexx/payrexx": "dev-master",
"phpmailer/phpmailer": "^6.1",
"components/jquery": "3.5.*",
"nikic/fast-route": "^1.3",
"components/jqueryui": "^1.12",
"jumbojett/openid-connect-php": "^0.9.1",
"tecnickcom/tcpdf": "^6.3",
"spatie/schema-org": "^3.3",
"guzzlehttp/guzzle": "^7.3",
"microsoft/azure-storage-blob": "^1.5",
"sendinblue/api-v3-sdk": "7.x.x",
"sprain/swiss-qr-bill": "^3.1"

Following the StackTrace of the error:

Exception: Fehlertyp konnte nicht analyisiert werden in /var/www/html/routers/Router.php:513 
Stack trace: 
#0 [internal function]: Ludonix\Routers\Router::handleErrors() 
#1 /var/www/html/vendor/symfony/deprecation-contracts/function.php(25): trigger_error() 
#2 /var/www/html/vendor/symfony/intl/Resources/stubs/Locale.php(16): trigger_deprecation() 
#3 /var/www/html/vendor/composer/ClassLoader.php(476): include('...') 
#4 /var/www/html/vendor/composer/ClassLoader.php(344): Composer\Autoload\includeFile() 
#5 /var/www/html/vendor/symfony/intl/Locale.php(21): Composer\Autoload\ClassLoader->loadClass() 
#6 /var/www/html/vendor/composer/ClassLoader.php(476): include('...') 
#7 /var/www/html/vendor/composer/ClassLoader.php(344): Composer\Autoload\includeFile() 
#8 /var/www/html/vendor/symfony/intl/Data/Bundle/Reader/BundleEntryReader.php(142): Composer\Autoload\ClassLoader->loadClass() 
#9 /var/www/html/vendor/symfony/intl/ResourceBundle.php(54): Symfony\Component\Intl\Data\Bundle\Reader\BundleEntryReader->readEntry() 
#10 /var/www/html/vendor/symfony/intl/Countries.php(68): Symfony\Component\Intl\ResourceBundle::readEntry() 
#11 /var/www/html/vendor/symfony/validator/Constraints/CountryValidator.php(46): Symfony\Component\Intl\Countries::exists() 
#12 /var/www/html/vendor/symfony/validator/Validator/RecursiveContextualValidator.php(759): Symfony\Component\Validator\Constraints\CountryValidator->validate() 
#13 /var/www/html/vendor/symfony/validator/Validator/RecursiveContextualValidator.php(602): Symfony\Component\Validator\Validator\RecursiveContextualValidator->validateInGroup() 
#14 /var/www/html/vendor/symfony/validator/Validator/RecursiveContextualValidator.php(516): Symfony\Component\Validator\Validator\RecursiveContextualValidator->validateGenericNode() 
#15 /var/www/html/vendor/symfony/validator/Validator/RecursiveContextualValidator.php(313): Symfony\Component\Validator\Validator\RecursiveContextualValidator->validateClassNode() 
#16 /var/www/html/vendor/symfony/validator/Validator/RecursiveContextualValidator.php(661): Symfony\Component\Validator\Validator\RecursiveContextualValidator->validateObject() 
#17 /var/www/html/vendor/symfony/validator/Validator/RecursiveContextualValidator.php(516): Symfony\Component\Validator\Validator\RecursiveContextualValidator->validateGenericNode() 
#18 /var/www/html/vendor/symfony/validator/Validator/RecursiveContextualValidator.php(313): Symfony\Component\Validator\Validator\RecursiveContextualValidator->validateClassNode() 
#19 /var/www/html/vendor/symfony/validator/Validator/RecursiveContextualValidator.php(138): Symfony\Component\Validator\Validator\RecursiveContextualValidator->validateObject() 
#20 /var/www/html/vendor/symfony/validator/Validator/RecursiveValidator.php(93): Symfony\Component\Validator\Validator\RecursiveContextualValidator->validate() 
#21 /var/www/html/vendor/sprain/swiss-qr-bill/src/Validator/SelfValidatableTrait.php(24): Symfony\Component\Validator\Validator\RecursiveValidator->validate() 
#22 /var/www/html/vendor/sprain/swiss-qr-bill/src/Validator/SelfValidatableTrait.php(29): Sprain\SwissQrBill\QrBill->getViolations() 
#23 /var/www/html/vendor/sprain/swiss-qr-bill/src/QrBill.php(167): Sprain\SwissQrBill\QrBill->isValid() 
#24 /var/www/html/vendor/sprain/swiss-qr-bill/src/PaymentPart/Output/AbstractOutput.php(167): Sprain\SwissQrBill\QrBill->getQrCode() 
#25 /var/www/html/vendor/sprain/swiss-qr-bill/src/PaymentPart/Output/TcPdfOutput/TcPdfOutput.php(92): Sprain\SwissQrBill\PaymentPart\Output\AbstractOutput->getQrCode() 
#26 /var/www/html/vendor/sprain/swiss-qr-bill/src/PaymentPart/Output/TcPdfOutput/TcPdfOutput.php(81): Sprain\SwissQrBill\PaymentPart\Output\TcPdfOutput\TcPdfOutput->addSwissQrCodeImage() 
#27 /var/www/html/components/AdvancedComponents/Dokumente/PDF.php(88): Sprain\SwissQrBill\PaymentPart\Output\TcPdfOutput\TcPdfOutput->getPaymentPart() 
#28 /var/www/html/components/AdvancedComponents/Dokumente/Rechnung.php(173): Ludonix\Components\AdvancedComponents\Dokumente\PDF->erstellePDF() 
#29 /var/www/html/controllers/Dokumente/Rechnung_Controller.php(205): Ludonix\Components\AdvancedComponents\Dokumente\Rechnung->create() 
#30 /var/www/html/controllers/Dokumente/Rechnung_Controller.php(67): Ludonix\Controllers\Dokumente\Rechnung_Controller->erstellePDF() 
#31 /var/www/html/controllers/LoggedOutController.php(55): Ludonix\Controllers\Dokumente\Rechnung_Controller->initialize()
#32 /var/www/html/routers/Router.php(487): Ludonix\Controllers\LoggedOutController->__construct() 
#33 [internal function]: Ludonix\Routers\Router::Ludonix\Routers\{closure}() 
#34 /var/www/html/routers/Router.php(73): call_user_func() 
#35 /var/www/html/index.php(62): Ludonix\Routers\Router::route() 
#36 {main}

[kohlerdominik]

Hi @M4SX5

Thanks for this report. From your stack trace it looks like that this deprecation warning is triggered indirectly in symfony/validator. But symfony/validator does require neither symfony/intl nor symfony/polyfill-intl-icu, looks like this is up to the library using validator-methods which depend on this libraries.

So it might be true that we should add symfony/polyfill-intl-icu as dependeny, as we rely on it by using the CountryValidator which depends on Symfony\Component\Intl\Countries::exists() which then utilizes its Symfony\Component\Intl\Locale. This extends \Locale, which if triggers it's own polyfill (the deprecated one) in case the php-intl extension is not installed.

TLDR:
If you just composer require symfony/polyfill-intl-icu ^1.21 in your project, the deprecation warning should disapear. Can you confirm this?

[M4SX5]

Hi @kohlerdominik

Thank you for your answer. I just tried your suggestion and can confirm, that when I add polyfill-intl-icu as a dependency in my project (composer require symfony/polyfill-intl-icu ^1.21) the deprecation warning disapears.