diff --git a/test/library_demos/table_based.html b/test/library_demos/table_based.html
index 25617cb..3764367 100644
--- a/test/library_demos/table_based.html
+++ b/test/library_demos/table_based.html
@@ -42,15 +42,18 @@
         let output_table = [];
         let user_query = document.getElementById('query_input').value;
         clear_html_table(document.getElementById('dst_table'));
-        let error_handler = function(error_type, error_msg) {
-            alert('RBQL Query finished with error: ' + error_type + ': ' + error_msg);
+
+        let error_handler = function(exception) {
+            alert('RBQL Query finished with error: ' + String(exception));
         }
+
         let success_handler = function(warnings) {
             if (warnings.length)
                 alert('Warnings: ' + warnings.join('\n'))
             write_html_table(output_table, document.getElementById('dst_table'));
         }
-        rbql.table_run(user_query, input_table, output_table, success_handler, error_handler);
+
+        rbql.table_run(user_query, input_table, output_table).then(success_handler).catch(error_handler);
     }
     
     document.addEventListener("DOMContentLoaded", function(event) {