feat(email): 切区域刷域名判断

@@ -67,8 +67,14 @@ class AppEnvironmentConfig {
 
   Future<void> setRegion(AppRegion value) async {
     region.value = value;
-    await _storage.writeRegion(value);
-    Get.find<DioClient>().refreshBaseUrl();
+    try {
+      await _storage.writeRegion(value);
+      if (Get.isRegistered<DioClient>()) {
+        Get.find<DioClient>().refreshBaseUrl();
+      }
+    } catch (e) {
+      debugPrint('setRegion failed: $e');
+    }
   }
 
   get hideChooseRegion => _storage.hideChooseRegion;