'Class Magento\Catalog\Model\Indexer\Category\Flat\Action\FullFactory does not exist'

Question

I have a Magento 2.0 store that I am trying to update the categories and products on. When I run it through the gui I get the following error message:

exception 'Magento\Framework\Exception\LocalizedException' with message 'Class Magento\Catalog\Model\Indexer\Category\Flat\Action\FullFactory does not exist' in vendor/magento/framework/Code/Generator.php:103
Stack trace:
#0 vendor/magento/framework/Code/Generator/Autoloader.php(35): Magento\Framework\Code\Generator->generateClass('Magento\Catalog...') #1 [internal function]: Magento\Framework\Code\Generator\Autoloader->load('Magento\Catalog...')
#2 [internal function]: spl_autoload_call('Magento\Catalog...')
#3 vendor/magento/framework/Code/Reader/ClassReader.php(19): ReflectionClass->__construct('Magento\Catalog...')
#4 vendor/magento/framework/ObjectManager/Definition/Runtime.php(44): Magento\Framework\Code\Reader\ClassReader->getConstructor('Magento\Catalog...')
#5

Any ideas? I'm a bit stumped and would appreciate any help.

Answer 1

Try to empty the folowing directory's:

/www/var/di

and

/www/var/generation

Answer 2

I think you try: composer install.

cd rootFolderMagento
sudo composer install