diff --git a/common/modules/mixly-modules/common/editor-blockly.js b/common/modules/mixly-modules/common/editor-blockly.js
index 966d1ba7..64703f24 100644
--- a/common/modules/mixly-modules/common/editor-blockly.js
+++ b/common/modules/mixly-modules/common/editor-blockly.js
@@ -182,7 +182,7 @@ class EditorBlockly extends EditorBase {
         }
 
         this.getCode = (workspace, generator) => {
-            let code = generator.workspaceToCode(workspace) || '';
+            let code = generator?.workspaceToCode(workspace) || '';
             code = code.replace(/(_E[0-9A-F]{1}_[0-9A-F]{2}_[0-9A-F]{2})+/g, function (s) {
                 try {
                     return decodeURIComponent(s.replace(/_/g, '%'));