diff --git a/.idea/deploymentTargetDropDown.xml b/.idea/deploymentTargetDropDown.xml
index 6f80f37..b462ce7 100644
--- a/.idea/deploymentTargetDropDown.xml
+++ b/.idea/deploymentTargetDropDown.xml
@@ -7,11 +7,11 @@
         <deviceKey>
           <Key>
             <type value="VIRTUAL_DEVICE_PATH" />
-            <value value="$USER_HOME$/.android/avd/Pixel_5_API_32.avd" />
+            <value value="C:\Users\nmtun\.android\avd\Pixel_4a_API_32_1.avd" />
           </Key>
         </deviceKey>
       </Target>
     </targetSelectedWithDropDown>
-    <timeTargetWasSelectedWithDropDown value="2022-03-17T17:09:57.652701Z" />
+    <timeTargetWasSelectedWithDropDown value="2022-03-23T16:59:33.435890100Z" />
   </component>
 </project>
\ No newline at end of file
diff --git a/app/src/main/java/fu/prm391/sampl/project/view/fragment/Cart.java b/app/src/main/java/fu/prm391/sampl/project/view/fragment/Cart.java
index 1e68759..c312f71 100644
--- a/app/src/main/java/fu/prm391/sampl/project/view/fragment/Cart.java
+++ b/app/src/main/java/fu/prm391/sampl/project/view/fragment/Cart.java
@@ -146,7 +146,9 @@ public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceStat
     @Override
     public void onDestroyView() {
         super.onDestroyView();
-        call.cancel();
+        if (call != null) {
+            call.cancel();
+        }
     }
 
     private void setEventBtnCheckout() {