«Unable to unserialize value. Error: Syntax error» on /customer/ajax/login in Magento\Persistent\Observer\SetRememberMeStatusForAjaxLoginObserver->execute()

[dmitrii-fediuk]

{"0":"Unable to unserialize value. Error: Syntax error","1":"<pre>#1 Magento\Persistent\Observer\SetRememberMeStatusForAjaxLoginObserver->execute() called at [vendor/magento/framework/Event/Invoker/InvokerDefault.php:88]
#2 Magento\Framework\Event\Invoker\InvokerDefault->_callObserverMethod() called at [vendor/magento/framework/Event/Invoker/InvokerDefault.php:74]
#3 Magento\Framework\Event\Invoker\InvokerDefault->dispatch() called at [vendor/magento/framework/Event/Manager.php:66]
#4 Magento\Framework\Event\Manager->dispatch() called at [generated/code/Magento/Framework/Event/Manager/Proxy.php:95]
#5 Magento\Framework\Event\Manager\Proxy->dispatch() called at [vendor/magento/framework/App/Action/Action.php:101]
#6 Magento\Framework\App\Action\Action->dispatch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#7 Magento\Customer\Controller\Ajax\Login\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#8 Magento\Customer\Controller\Ajax\Login\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#9 Magento\Customer\Controller\Ajax\Login\Interceptor->___callPlugins() called at [generated/code/Magento/Customer/Controller/Ajax/Login/Interceptor.php:39]
#10 Magento\Customer\Controller\Ajax\Login\Interceptor->dispatch() called at [vendor/magento/framework/App/FrontController.php:159]
#11 Magento\Framework\App\FrontController->processRequest() called at [vendor/magento/framework/App/FrontController.php:99]
#12 Magento\Framework\App\FrontController->dispatch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#13 Magento\Framework\App\FrontController\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#14 Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/module-store/App/FrontController/Plugin/RequestPreprocessor.php:94]
#15 Magento\Store\App\FrontController\Plugin\RequestPreprocessor->aroundDispatch() called at [vendor/magento/framework/Interception/Interceptor.php:135]
#16 Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/module-page-cache/Model/App/FrontController/BuiltinPlugin.php:73]
#17 Magento\PageCache\Model\App\FrontController\BuiltinPlugin->aroundDispatch() called at [vendor/magento/framework/Interception/Interceptor.php:135]
#18 Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#19 Magento\Framework\App\FrontController\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/App/FrontController/Interceptor.php:26]
#20 Magento\Framework\App\FrontController\Interceptor->dispatch() called at [vendor/magento/framework/App/Http.php:137]
#21 Magento\Framework\App\Http->launch() called at [vendor/magento/framework/Interception/Interceptor.php:58]
#22 Magento\Framework\App\Http\Interceptor->___callParent() called at [vendor/magento/framework/Interception/Interceptor.php:138]
#23 Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/mage2pro/core/Framework/Plugin/App/Http.php:10]
#24 Df\Framework\Plugin\App\Http->aroundLaunch() called at [vendor/magento/framework/Interception/Interceptor.php:135]
#25 Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#26 Magento\Framework\App\Http\Interceptor->___callPlugins() called at [generated/code/Magento/Framework/App/Http/Interceptor.php:26]
#27 Magento\Framework\App\Http\Interceptor->launch() called at [vendor/magento/framework/App/Bootstrap.php:261]
#28 Magento\Framework\App\Bootstrap->run() called at [pub/index.php:40]
</pre>","url":"/customer/ajax/login","script_name":"/index.php"}

[dmitrii-fediuk]

It is occuring at the frontend checkout, but I am unable to reproduce it with my customer account.