New answers tagged upgrade
1
Class Magento\Framework\Search\Adapter\Mysql\Mapper is not exist in magento 2.4, it's exist in magento2.2.X and
magento2.3.X version for error resolution you need to upgrade your third party extension for magento2.4.x version.
0
Try to run the command :-
composer dump-autoload
0
Did you tried all of this?
rm -rf var/*
rm -rf generated/*
rm -rf pub/static/*
php bin/magento cache:clean
php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento cache:clean
php bin/magento indexer:reindex
php bin/magento setup:static-content:deploy -f
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