Throw error if no key passed to memcached
Throw error if no key passed to memcached

grumbelbart/zotero_dataserver_sualk,zebulon2/dataserver,zebulon2/dataserver,zebulon2/dataserver,grumbelbart/zotero_dataserver_sualk,zebulon2/dataserver,grumbelbart/zotero_dataserver_sualk,grumbelbart/zotero_dataserver_sualk