Improve error handling of mysqlQuery and return row count as result

server/util-server.js

@@ -335,15 +335,13 @@ exports.mysqlQuery = function (connectionString, query) {
         connection.query(query, (err, res) => {
             if (err) {
                 reject(err);
-            }
+            } else {
-
-            // Check if res is an array
                 if (Array.isArray(res)) {
                     resolve("Rows: " + res.length);
                 } else {
                     resolve("No Error, but the result is not an array. Type: " + typeof res);
                 }
-
+            }
             connection.destroy();
         });
     });