Can't create customer account!! [Compatibility issue with PHP 8.1 and Magento 2.4.4??]

Preconditions and environment

• Magento 2.4.4 Open Source
• PHP 8.1.9
• Composer 2.1.0

Steps to reproduce

1. Upgraded PHP version 7.4.3 to 8.1.9
2. Enabled PHP 8.1.9
3. Disabled PHP 7.4.3
4. Enter to https:///www.xxxxx.com
5. Enter to Create an account
6. https://www.xxxxx.com/customer/account/create/ shows the Error.

Expected result

Enter customer create page successfully.

Actual result

1 exception(s):
Exception #0 (Exception): Deprecated Functionality: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/vendor/magento/module-customer/Block/Widget/Name.php on line 110

Exception #0 (Exception): Deprecated Functionality: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/vendor/magento/module-customer/Block/Widget/Name.php on line 110

#1 trim() called at [vendor/magento/module-customer/Block/Widget/Name.php:110]
#2 Magento\Customer\Block\Widget\Name->getPrefixOptions() called at [vendor/magento/module-customer/view/frontend/templates/widget/name.phtml:39]
#3 include() called at [vendor/magento/framework/View/TemplateEngine/Php.php:71]
#4 Magento\Framework\View\TemplateEngine\Php->render() called at [vendor/magento/framework/View/Element/Template.php:263]
#5 Magento\Framework\View\Element\Template->fetchView() called at [vendor/magento/framework/View/Element/Template.php:293]
#6 Magento\Framework\View\Element\Template->_toHtml() called at [vendor/magento/framework/View/Element/AbstractBlock.php:1095]
#7 Magento\Framework\View\Element\AbstractBlock->Magento\Framework\View\Element\{closure}() called at [vendor/magento/framework/View/Element/AbstractBlock.php:1099]
#8 Magento\Framework\View\Element\AbstractBlock->_loadCache() called at [vendor/magento/framework/View/Element/AbstractBlock.php:660]
#9 Magento\Framework\View\Element\AbstractBlock->toHtml() called at [vendor/magento/module-customer/view/frontend/templates/form/register.phtml:40]
#10 include() called at [vendor/magento/framework/View/TemplateEngine/Php.php:71]
#11 Magento\Framework\View\TemplateEngine\Php->render() called at [vendor/magento/framework/View/Element/Template.php:263]
#12 Magento\Framework\View\Element\Template->fetchView() called at [vendor/magento/framework/View/Element/Template.php:293]
#13 Magento\Framework\View\Element\Template->_toHtml() called at [vendor/magento/framework/View/Element/AbstractBlock.php:1095]
#14 Magento\Framework\View\Element\AbstractBlock->Magento\Framework\View\Element\{closure}() called at [vendor/magento/framework/View/Element/AbstractBlock.php:1099]
#15 Magento\Framework\View\Element\AbstractBlock->_loadCache() called at [vendor/magento/framework/View/Element/AbstractBlock.php:660]
#16 Magento\Framework\View\Element\AbstractBlock->toHtml() called at [vendor/magento/framework/View/Layout.php:578]
#17 Magento\Framework\View\Layout->_renderBlock() called at [vendor/magento/framework/View/Layout.php:555]
#18 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#19 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#20 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#21 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#22 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#23 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#24 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#25 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#26 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#27 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#28 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#29 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#30 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#31 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#32 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#33 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#34 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:606]
#35 Magento\Framework\View\Layout->_renderContainer() called at [vendor/magento/framework/View/Layout.php:557]
#36 Magento\Framework\View\Layout->renderNonCachedElement() called at [vendor/magento/framework/View/Layout.php:510]
#37 Magento\Framework\View\Layout->renderElement() called at [vendor/magento/framework/View/Layout.php:975]
#38 Magento\Framework\View\Layout->getOutput() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#39 Magento\Framework\View\Layout\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#40 Magento\Framework\View\Layout\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#41 Magento\Framework\View\Layout\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/View/Layout/Interceptor.php:41]
#42 Magento\Framework\View\Layout\Interceptor->getOutput() called at [vendor/magento/framework/View/Result/Page.php:260]
#43 Magento\Framework\View\Result\Page->render() called at [vendor/magento/framework/View/Result/Layout.php:171]
#44 Magento\Framework\View\Result\Layout->renderResult() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#45 Magento\Framework\View\Result\Page\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#46 Magento\Framework\View\Result\Page\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#47 Magento\Framework\View\Result\Page\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/View/Result/Page/Interceptor.php:23]
#48 Magento\Framework\View\Result\Page\Interceptor->renderResult() called at [vendor/magento/framework/App/Http.php:120]
#49 Magento\Framework\App\Http->launch() called at [vendor/magento/framework/App/Bootstrap.php:264]
#50 Magento\Framework\App\Bootstrap->run() called at [pub/index.php:30]

Additional information

I was wondering if editing document can fix this compatibility issue?

Release note

No response

Triage and priority

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

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#35542 #35490 #35985

Edited app/code/Magento/Customer/Block/Widget/Name.php as below:

From $prefixOption = $this->getObject()->getPrefix(); to $prefixOption = $this->getObject()->getPrefix() ?? '';

---

After submited account creation
Got this on https://www.example.com/customer/account/createpost/

ValueError: bcsub(): Argument #1 ($num1) is not well-formed in /var/www/html/vendor/magento/zendframework1/library/Zend/Locale/Math.php:259
Stack trace:
#0 /var/www/html/vendor/magento/zendframework1/library/Zend/Locale/Math.php(259): bcsub()
#1 /var/www/html/vendor/magento/zendframework1/library/Zend/Locale/Format.php(385): Zend_Locale_Math::Sub()
#2 /var/www/html/vendor/magento/zendframework1/library/Zend/Locale/Format.php(662): Zend_Locale_Format::toNumber()
#3 /var/www/html/vendor/magento/zendframework1/library/Zend/Filter/NormalizedToLocalized.php(106): Zend_Locale_Format::toFloat()
#4 /var/www/html/vendor/magento/framework/Data/Form/Filter/Date.php(69): Zend_Filter_NormalizedToLocalized->filter()
#5 /var/www/html/vendor/magento/module-customer/Model/Metadata/Form/AbstractData.php(197): Magento\Framework\Data\Form\Filter\Date->inputFilter()
#6 /var/www/html/vendor/magento/module-customer/Model/Metadata/Form/Date.php(20): Magento\Customer\Model\Metadata\Form\AbstractData->_applyInputFilter()
#7 /var/www/html/vendor/magento/module-customer/Model/Metadata/Form.php(244): Magento\Customer\Model\Metadata\Form\Date->extractValue()
#8 /var/www/html/generated/code/Magento/Customer/Model/Metadata/Form/Interceptor.php(23): Magento\Customer\Model\Metadata\Form->extractData()
#9 /var/www/html/vendor/magento/module-customer/Model/CustomerExtractor.php(84): Magento\Customer\Model\Metadata\Form\Interceptor->extractData()
#10 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Customer\Model\CustomerExtractor->extract()
#11 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Customer\Model\CustomerExtractor\Interceptor->___callParent()
#12 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Customer\Model\CustomerExtractor\Interceptor->Magento\Framework\Interception\{closure}()
#13 /var/www/html/generated/code/Magento/Customer/Model/CustomerExtractor/Interceptor.php(23): Magento\Customer\Model\CustomerExtractor\Interceptor->___callPlugins()
#14 /var/www/html/vendor/magento/module-customer/Controller/Account/CreatePost.php(368): Magento\Customer\Model\CustomerExtractor\Interceptor->extract()
#15 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Customer\Controller\Account\CreatePost->execute()
#16 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Customer\Controller\Account\CreatePost\Interceptor->___callParent()
#17 /var/www/html/vendor/magento/module-customer/Controller/Plugin/Account.php(64): Magento\Customer\Controller\Account\CreatePost\Interceptor->Magento\Framework\Interception\{closure}()
#18 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(135): Magento\Customer\Controller\Plugin\Account->aroundExecute()
#19 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Customer\Controller\Account\CreatePost\Interceptor->Magento\Framework\Interception\{closure}()
#20 /var/www/html/generated/code/Magento/Customer/Controller/Account/CreatePost/Interceptor.php(23): Magento\Customer\Controller\Account\CreatePost\Interceptor->___callPlugins()
#21 /var/www/html/vendor/magento/framework/App/Action/Action.php(111): Magento\Customer\Controller\Account\CreatePost\Interceptor->execute()
#22 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Action\Action->dispatch()
#23 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Customer\Controller\Account\CreatePost\Interceptor->___callParent()
#24 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Customer\Controller\Account\CreatePost\Interceptor->Magento\Framework\Interception\{closure}()
#25 /var/www/html/generated/code/Magento/Customer/Controller/Account/CreatePost/Interceptor.php(32): Magento\Customer\Controller\Account\CreatePost\Interceptor->___callPlugins()
#26 /var/www/html/vendor/magento/framework/App/FrontController.php(245): Magento\Customer\Controller\Account\CreatePost\Interceptor->dispatch()
#27 /var/www/html/vendor/magento/framework/App/FrontController.php(212): Magento\Framework\App\FrontController->getActionResponse()
#28 /var/www/html/vendor/magento/framework/App/FrontController.php(147): Magento\Framework\App\FrontController->processRequest()
#29 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\FrontController->dispatch()
#30 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\FrontController\Interceptor->___callParent()
#31 /var/www/html/vendor/magento/module-store/App/FrontController/Plugin/RequestPreprocessor.php(99): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}()
#32 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(135): Magento\Store\App\FrontController\Plugin\RequestPreprocessor->aroundDispatch()
#33 /var/www/html/vendor/magento/module-page-cache/Model/App/FrontController/BuiltinPlugin.php(75): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}()
#34 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(135): Magento\PageCache\Model\App\FrontController\BuiltinPlugin->aroundDispatch()
#35 /var/www/html/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}()
#36 /var/www/html/generated/code/Magento/Framework/App/FrontController/Interceptor.php(23): Magento\Framework\App\FrontController\Interceptor->___callPlugins()
#37 /var/www/html/vendor/magento/framework/App/Http.php(116): Magento\Framework\App\FrontController\Interceptor->dispatch()
#38 /var/www/html/vendor/magento/framework/App/Bootstrap.php(264): Magento\Framework\App\Http->launch()
#39 /var/www/html/pub/index.php(30): Magento\Framework\App\Bootstrap->run()
#40 {main}

[m2-assistant]

Hi @engcom-Dash. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).
     Details

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[engcom-Dash]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @engcom-Dash. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @engcom-Dash, here is your Magento Instance: https://aa31fe3a6dae6b7524c278770b136699.instances.magento-community.engineering
Admin access: https://aa31fe3a6dae6b7524c278770b136699.instances.magento-community.engineering/admin_b4ee
Login: 055b14c7
Password: b4fa14606ada

[engcom-Dash]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @engcom-Dash. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @engcom-Dash, here is your Magento Instance: https://aa31fe3a6dae6b7524c278770b136699.instances.magento-community.engineering
Admin access: https://aa31fe3a6dae6b7524c278770b136699.instances.magento-community.engineering/admin_3991
Login: 52571f19
Password: d29a713bfc2c

[engcom-Dash]

Hi @krusleung ,

We are trying to reproduce the issue in 2.4-develop But we are not able to reproduce the issue...

Customer account able to create successfully...

Here i Attached the screenshots for your reference....

Steps to reproduce the issue:

1. Install Magento Instance
2. Create the Account in Customer view Page
3. Account was Successfully created.

Let us know if we are miss anything....

Thanks!!!