fix NPE for missing group

src/main/java/com/sjhy/plugin/ui/TemplateSettingPanel.java

@@ -151,6 +151,8 @@ public class TemplateSettingPanel implements Configurable {
         // 创建主面板
         JPanel mainPanel = new JPanel(new BorderLayout());
 
+        this.currGroupName = findExistedGroupName(this.currGroupName);
+
         // 实例化分组面板
         this.baseGroupPanel = new BaseGroupPanel(new ArrayList<>(group.keySet()), this.currGroupName) {
             @Override
@@ -254,6 +256,25 @@ public class TemplateSettingPanel implements Configurable {
         return mainPanel;
     }
 
+    /**
+     * 获取存在的分组名
+     *
+     * @param groupName 分组名
+     * @return 存在的分组名
+     */
+    private String findExistedGroupName(String groupName) {
+        //如果groupName不存在
+        if (!group.containsKey(groupName)) {
+            if (group.containsKey(Settings.DEFAULT_NAME)) {//尝试使用默认分组
+                return Settings.DEFAULT_NAME;
+            } else {
+                //获取第一个分组
+                return group.keySet().stream().findFirst().orElse(Settings.DEFAULT_NAME);
+            }
+        }
+        return groupName;
+    }
+
     /**
      * 添加调试面板
      */
@@ -414,6 +435,7 @@ public class TemplateSettingPanel implements Configurable {
         // 防止对象篡改，需要进行克隆
         this.group = CloneUtils.cloneByJson(settings.getTemplateGroupMap(), new TypeReference<Map<String, TemplateGroup>>() {});
         this.currGroupName = settings.getCurrTemplateGroupName();
+        this.currGroupName = findExistedGroupName(settings.getCurrTemplateGroupName());
         if (baseGroupPanel == null) {
             return;
         }