REPORT-60253 安装大数据集导出插件后，模板从本地切换到远程，再切换到本地，触发保存模板会弹窗 保存失败，有npe报错

designer-base/src/main/java/com/fr/design/mainframe/JTemplate.java

@@ -381,7 +381,9 @@ public abstract class JTemplate<T extends BaseBook, U extends BaseUndoState<?>>
      */
     @Deprecated
     public void refreshResource() {
-        refreshResource(this.editingFILE);
+        if (JTemplateFactory.isAvailable()) {
+            refreshResource(this.editingFILE);
+        }
     }
 
     public void refreshResource(FILE file) {

designer-base/src/main/java/com/fr/design/mainframe/JTemplateFactory.java

@@ -93,4 +93,7 @@ public final class JTemplateFactory {
             ALL_APP.remove(app);
         }
     }
-}
+
+    public static boolean isAvailable() {
+        return !ALL_APP.isEmpty();
+    }}