Errors installing optional sample data

Errors installing optional sample data

Symptom

Error in the console log during sample data installation using the Setup Wizard:

Module 'Magento_CatalogRuleSampleData':
[ERROR] exception 'Magento\Framework\Exception\LocalizedException' with message 'Can't create directory /var/www/html/magento2/var/generation/Magento/CatalogRule/Model/.' in /var/www/html/magento2/lib/internal/Magento/Framework/Code/Generator.php:103

(more)

Next exception 'ReflectionException' with message 'Class Magento\CatalogRule\Model\RuleFactory does not exist' in /var/www/html/magento2/lib/internal/Magento/Framework/Code/Reader/ClassReader.php:29

(more)

These exceptions result from file system permissions settings.

Solution

Set file system ownership and permissions again as a user with root privileges.

Symptom

During installation of optional sample data, a message similar to the following displays:

PHP Fatal error: Call to undefined method Magento\Catalog\Model\Resource\Product\Interceptor::getWriteConnection() in /var/www/magento2/app/code/Magento/SampleData/Module/Catalog/Setup/Product/Gallery.php on line 144

Solution

During sample data installation, disable SELinux using a resource such as:

• crypt.gen.nz
• CentOS documentation

Symptom

Other errors display, such as:

[Magento\Setup\SampleDataException] Error during sample data installation: Class Magento\Sales\Model\Service\OrderFactory does not exist

Solution

There are known issues with using sample data with the Magento 2 develop branch. Use the master branch instead. You can switch to the master branch as follows:

cd <your Magento install dir>
git checkout master
git pull origin master