xPlore error - Not allowed to query non meaningful words

The original query sent is -

let $libs := collection('/repo_vbox/dsearch/Data') let $results := for $dm_doc score $s in $libs/dmftdoc[(dmftmetadata//a_is_hidden = "false") and (dmftversions/iscurrent = "true") and (dmftinternal/i_all_types = "0300303980000282") and (dmftmetadata//object_name ftcontains ".*%.*" with wildcards) and (dmftmetadata//title ftcontains ".*index.*" with wildcards)] order by $dm_doc/dmftmetadata//object_name collation "en" return $dm_doc return (dsearch:compute-facets((<def><name>doc_edas_type</name><max>21</max><attribute>dmftmetadata//doc_edas_type</attribute><orderBy>NONE</orderBy></def>), $results, <config><attributeIndex attribute='dmftmetadata//owner_name'>0</attributeIndex><attributeIndex attribute='dmftsecurity/acl_name'>1</attributeIndex><attributeIndex attribute='dmftsecurity/acl_domain'>2</attributeIndex><attributeIndex attribute='dmftmetadata//doc_edas_type'>3</attributeIndex></config>),for $dm_doc in subsequence($results,1,351) return <r>{for $attr in $dm_doc/dmftmetadata//*[local-name()=('r_object_id','r_version_label','object_name','r_object_type','a_content_type','a_application_type','r_is_virtual_doc','r_link_cnt','r_lock_owner','r_policy_id','r_assembled_from_id','r_immutable_flag','r_frozen_flag','i_is_reference')] return <attr name='{local-name($attr)}' type='{$attr/@dmfttype}'>{string($attr)}</attr>}{xhive:highlight(($dm_doc/dmftcontents/dmftcontent/dmftcontentref,$dm_doc/dmftcustom))}<attr name='score' type='dmdouble'>{string(dsearch:get-score($dm_doc))}</attr></r>)