Unable to get usage info: (OperationalError) (1054, "Unknown column 'state_description' in 'field list'") "select id,image_ref,project_id,user_id,vcpus,hostname,display_name,host,state_description,instance_type_id,launched_at,terminated_at from instances where (terminated_at is NULL or terminated_at > '2012-01-01 00:00:00') and (launched_at < '2012-01-17 20:29:14.537675') and project_id='1'" ()