corrected get service by LeikaId

service/InfoService.js

@@ -23,7 +23,7 @@ exports.getAllServices = function() {
  **/
 exports.getServiceByLeiKaId = function(leikaId) {
   return new Promise(function(resolve, reject) {
-    const serviceRecord = Service.find({leikaId: leikaId});
+    const serviceRecord = Service.findOne({leikaId: leikaId});
     resolve(serviceRecord);
   });
 }