bug 703 fixed.

lib/controllers/providers/api/ppm_provider.dart

@@ -149,10 +149,11 @@ class PpmProvider extends ChangeNotifier {
   // }
 
   Future<PlanPreventiveVisit?> getPlanPreventiveVisitById(int id) async {
-    // try {
+    try {
     isLoading = true;
     Response response = await ApiManager.instance.get(URLs.getPlanPreventiveVisitById + "?planPreventiveVisitId=$id");
     if (response.statusCode >= 200 && response.statusCode < 300) {
+      ppmPlanAttachments = [];
       planPreventiveVisit = PlanPreventiveVisit.fromJson(json.decode(response.body)["data"]);
       isLoading = false;
       notifyListeners();
@@ -161,11 +162,11 @@ class PpmProvider extends ChangeNotifier {
     isLoading = false;
     notifyListeners();
     return null;
-    // } catch (error) {
-    //  isLoading= false;
-    //  notifyListeners();
-    //   return null;
-    // }
+    } catch (error) {
+     isLoading= false;
+     notifyListeners();
+      return null;
+    }
   }
 
   Future<int> updateVisitByEngineer({required int status}) async {