Error message

• Warning: array_map(): Argument #2 should be an array in islandora_basic_collection_display_query_sparql() (line 239 of /var/www/fabb.to.cnr.it/sites/all/modules/islandora_solution_pack_collection/includes/utilities.inc).
• Warning: XMLReader::XML(): Empty string supplied as input in RepositoryQuery::parseSparqlResults() (line 40 of /var/www/fabb.to.cnr.it/sites/all/libraries/tuque/RepositoryQuery.php).
• Warning: XMLReader::read(): Load Data before trying to read in RepositoryQuery::parseSparqlResults() (line 45 of /var/www/fabb.to.cnr.it/sites/all/libraries/tuque/RepositoryQuery.php).