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After successful upgrade to Magento 2.4.1 logging in to Magento admin displays the error message below. What is the fix for this? Thanks.

1 exception(s):
Exception #0 (ReflectionException): Class Magento\Elasticsearch\Model\Adapter\FieldMapper\ProductFieldMapper does not exist

Exception #0 (ReflectionException): Class Magento\Elasticsearch\Model\Adapter\FieldMapper\ProductFieldMapper does not exist
<pre>#1 Magento\Framework\Code\Reader\ClassReader->getConstructor() called at [vendor/magento/framework/ObjectManager/Definition/Runtime.php:54]
#2 Magento\Framework\ObjectManager\Definition\Runtime->getParameters() called at [vendor/magento/framework/ObjectManager/Factory/Compiled.php:100]
#3 Magento\Framework\ObjectManager\Factory\Compiled->create() called at [vendor/magento/framework/ObjectManager/ObjectManager.php:70]
#4 Magento\Framework\ObjectManager\ObjectManager->get() called at [vendor/wyomind/framework/Helper/License.php:11]
#5 Wyomind\Framework\Helper\License->constructor() called at [vendor/wyomind/elasticsearchbrowser/Helper/Data.php:28]
#6 Wyomind\ElasticsearchBrowser\Helper\Data->__construct() called at [vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php:121]
#7 Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject() called at [vendor/magento/framework/ObjectManager/Factory/Compiled.php:108]
#8 Magento\Framework\ObjectManager\Factory\Compiled->create() called at [vendor/magento/framework/ObjectManager/ObjectManager.php:70]
#9 Magento\Framework\ObjectManager\ObjectManager->get() called at [vendor/wyomind/framework/Helper/License.php:11]
#10 Wyomind\Framework\Helper\License->constructor() called at [vendor/wyomind/elasticsearchbrowser/Plugin/Ui/Config/Data.php:13]
#11 Wyomind\ElasticsearchBrowser\Plugin\Ui\Config\Data->__construct() called at [vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php:121]
#12 Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject() called at [vendor/magento/framework/ObjectManager/Factory/Compiled.php:108]
#13 Magento\Framework\ObjectManager\Factory\Compiled->create() called at [vendor/magento/framework/ObjectManager/ObjectManager.php:70]
#14 Magento\Framework\ObjectManager\ObjectManager->get() called at [vendor/magento/framework/Interception/PluginList/PluginList.php:174]
#15 Magento\Framework\Interception\PluginList\PluginList->getPlugin() called at [vendor/magento/framework/Interception/Interceptor.php:133]
#16 Magento\Ui\Config\Data\Interceptor->Magento\Framework\Interception\{closure}() called at [vendor/magento/framework/Interception/Interceptor.php:153]
#17 Magento\Ui\Config\Data\Interceptor->___callPlugins() called at [generated/code/Magento/Ui/Config/Data/Interceptor.php:23]
#18 Magento\Ui\Config\Data\Interceptor->get() called at [vendor/magento/framework/View/Layout/Reader/UiComponent.php:100]
#19 Magento\Framework\View\Layout\Reader\UiComponent->interpret() called at [vendor/magento/framework/View/Layout/ReaderPool.php:105]
#20 Magento\Framework\View\Layout\ReaderPool->interpret() called at [vendor/magento/framework/View/Layout/Reader/Container.php:84]
#21 Magento\Framework\View\Layout\Reader\Container->interpret() called at [vendor/magento/framework/View/Layout/ReaderPool.php:105]
#22 Magento\Framework\View\Layout\ReaderPool->interpret() called at [vendor/magento/framework/View/Page/Config/Reader/Body.php:68]
#23 Magento\Framework\View\Page\Config\Reader\Body->interpret() called at [vendor/magento/framework/View/Layout/ReaderPool.php:105]
#24 Magento\Framework\View\Layout\ReaderPool->interpret() called at [vendor/magento/framework/View/Layout.php:334]
#25 Magento\Framework\View\Layout->generateElements() called at [generated/code/Magento/Framework/View/Layout/Interceptor.php:32]
#26 Magento\Framework\View\Layout\Interceptor->generateElements() called at [vendor/magento/framework/View/Layout/Builder.php:129]
#27 Magento\Framework\View\Layout\Builder->generateLayoutBlocks() called at [vendor/magento/framework/View/Page/Builder.php:65]
#28 Magento\Framework\View\Page\Builder->generateLayoutBlocks() called at [vendor/magento/framework/View/Layout/Builder.php:65]
#29 Magento\Framework\View\Layout\Builder->build() called at [vendor/magento/framework/View/Page/Config.php:224]
#30 Magento\Framework\View\Page\Config->build() called at [vendor/magento/framework/View/Page/Config.php:237]
#31 Magento\Framework\View\Page\Config->publicBuild() called at [vendor/magento/framework/View/Result/Page.php:242]
#32 Magento\Framework\View\Result\Page->render() called at [vendor/magento/framework/View/Result/Layout.php:171]
#33 Magento\Framework\View\Result\Layout->renderResult() called at [generated/code/Magento/Backend/Model/View/Result/Page/Interceptor.php:23]
#34 Magento\Backend\Model\View\Result\Page\Interceptor->renderResult() called at [vendor/magento/framework/App/Http.php:120]
#35 Magento\Framework\App\Http->launch() called at [vendor/magento/framework/App/Bootstrap.php:263]
#36 Magento\Framework\App\Bootstrap->run() called at [index.php:39]
</pre>
Improve this question
2
  • Review your list of disabled modules, make sure all Elasticsearch modules are enabled. If you are using REDIS for system cache, restart or clear the redis server cache.
    – paj
    Commented Jan 18, 2021 at 14:34
  • All Elasticsearch modules are enabled. Magento_Elasticsearch, Magento_Elasticsearch7 and Magento_Elasticsearch6.
    – CodeForGood
    Commented Jan 18, 2021 at 14:45

1 Answer 1

Reset to default
1

As per logs, its more like module wyomind/elasticsearchbrowser having some plugings/virtual types on class Class Magento\Elasticsearch\Model\Adapter\FieldMapper\ProductFieldMapper which was present till Magento 2.3 versions(See 2.3 version file on github).

Now since 2.4 versions class is not available in 2.4 Magento(try to switch to 2.4 branch and check, you will get 404).

You should give a try to upgrade wyomind module compatible to Magento 2.4 versions.

Ref. - https://github.com/magento/magento2/issues/21916

Improve this answer
3
  • Are you suggesting I upgrade wyomind/elasticsearchbrowser to fix the issue?
    – CodeForGood
    Commented Jan 22, 2021 at 14:54
  • Thanks for the suggestion. This helped fix the issue. Great job
    – CodeForGood
    Commented Jan 22, 2021 at 16:26
  • Great..glad to help you
    – sandip
    Commented Jan 22, 2021 at 16:38

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