orientdb Invalid keyword 'EXPAND' Command -

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i on orientdb2.1.0 , getting particular error

fatal error: uncaught exception 'phporient\exceptions\phporientexception' message 'com.orientechnologies.orient.core.sql.ocommandsqlparsingexception: error on parsing command @ position #354: invalid keyword 'expand' command: select *, count(@rid) mutual from( select expand(inv()) from( select expand(oute('follows')) from( select expand(out('follows')) #12:0 ) ) ) @rid not in( select expand(out('follows', 'dismissed')) #12:0 ) , @rid <> #12:0 group @rid order mutual desc skip 0 limit 10

how resolve ?


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