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When trying to edit or add a new product on the backend I receive the following error

Class Magento\Catalog\Model\Product\Attribute\Backend\Media does not exist.

It stops me from editing or adding a product! This has happened after importing a few products.

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  • Which is your Magento version? – Khoa TruongDinh Feb 8 '17 at 16:29
  • @KhoaTruongDinh 2.1.3 – Quagerty Feb 8 '17 at 16:31
  • Can you share the stack Trace from exception.log . Only share Trace for this error. Also , have you made sure that the class physically exists at the location – Abhishek Jakhotiya May 14 '17 at 5:53
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Use these commands on the root of your installation.

alias mage="php -d memory_limit=-1 -f bin/magento"

chmod -R 775 pub/static/ var/ pub/media/ && 
rm -rf var/view_preprocessed/ var/cache/ var/page_cache/ var/tmp/ var/generation/ pub/static/frontend/ vendor/* ; 
composer install && composer update -vvv && 
php -r "opcache_reset();" 
mage module:disable Magento_Review ; 
mage cache:flush && 
mage indexer:reindex && 
mage setup:upgrade && 
mage setup:static-content:deploy && 
mage setup:db-data:upgrade && 
mage dev:source-theme:deploy && 
chmod -R 775 pub/static/ pub/media/ var/
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