I am trying to install
I followed instructions about installing sample data from: http://devdocs.magento.com/guides/v2.0/install-gde/install/sample-data.html
I enabled sample data before installing Magento and at the end of installation, I got the following error:
Error during sample data installation: Source class "\Magento\SampleData\Model" for "Magento\SampleData\Model\Logger" generation does not exist
I then tried installing sample data after installing Magento. I am getting the following error while installing sample data after installing Magento:
[InvalidArgumentException] There are no commands defined in the "sampledata" namespace.