diff --git a/server/routes/api/utilities.js b/server/routes/api/utilities.js
index 7ee8b95..f0bb1b8 100644
--- a/server/routes/api/utilities.js
+++ b/server/routes/api/utilities.js
@@ -45,6 +45,8 @@ const get_KNOWN_DATA2 = async () => {
 			db_info.profile_data = tree_profiles.filter(function(t){ return t.profile_name == tree_profile_name;})[0].data;
 			db_info.schema_name = r2.filter(function(p){ return p.name == 'schema_kind';})[0].textvalue;
 			db_info.direct_class_role = r2.filter(function(p){ return p.name == 'direct_class_role';})[0].textvalue;
+			if ( db_info.direct_class_role == undefined )
+				db_info.direct_class_role = 'rdf:type';
 			db_info.indirect_class_role = r2.filter(function(p){ return p.name == 'indirect_class_role';})[0].textvalue;
 			db_info.use_pp_rels = r2.filter(function(p){ return p.name == 'use_pp_rels';})[0].jsonvalue;
 			if ( r2.filter(function(p){ return p.name == 'instance_lookup_mode';})[0].textvalue == 'table')
diff --git a/server/util/sparql/endpoint-queries.js b/server/util/sparql/endpoint-queries.js
index 6b2f034..c58e7fa 100644
--- a/server/util/sparql/endpoint-queries.js
+++ b/server/util/sparql/endpoint-queries.js
@@ -326,7 +326,10 @@ const sparqlGetPropertiesFromClass = async (schema, params, pos, uriClass, only_
 const executeSPARQL = async (endpointUrl, querySparql) => {
     let client = await findClient(endpointUrl);
 	console.log('--------executeSPARQL-----------------')
+	if ( querySparql == undefined)
+		return [];
 	console.log(querySparql)
+
     if (querySparql.toLowerCase().startsWith('ask')) {
         const reply = await client.query.ask(querySparql);
         console.log(reply)
@@ -509,7 +512,6 @@ const sparqlGetIndividualsNew =  async (schema, params) => {
 			individualPattern = await getIndividualPattern(schema, params, clInfo[0].iri);
 			const classInfo = await getClassSparqlPart(schema, params, clInfo[0].iri); 
 			whereList.push(classInfo); //(`?x ${typeString} <${clInfo[0].iri}>`);
-			
 		}	
 	}
 	
@@ -533,7 +535,7 @@ const sparqlGetIndividualsNew =  async (schema, params) => {
 		if (newPList.out.length > 0 )
 			newPList.out.forEach(element => whereList.push(`?x <${element}> []`));
 	}
-	
+
 	reply = await getFullResults(schema, endpointUrl, whereList, params, individualPattern);	
 	reply.forEach(v => { rr.push(v.localName);} );
 	return rr;