Your installation of WooCommerce is incomplete. If you installed WooCommerce from GitHub, {bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}1$splease refer to this document{bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}2$s to set up your development environment.