diff --git a/lib/common/widgets/network_img_layer.dart b/lib/common/widgets/network_img_layer.dart
index f7531cc49..e56c3bd4c 100644
--- a/lib/common/widgets/network_img_layer.dart
+++ b/lib/common/widgets/network_img_layer.dart
@@ -83,7 +83,6 @@ class NetworkImgLayer extends StatelessWidget {
   }
 
   Widget placeholder(BuildContext context) {
-    int cacheWidth = width.cacheSize(context);
     return Container(
       width: width,
       height: height,
@@ -106,7 +105,7 @@ class NetworkImgLayer extends StatelessWidget {
                     : 'assets/images/loading.png',
                 width: width,
                 height: height,
-                cacheWidth: cacheWidth == 0 ? null : cacheWidth,
+                cacheWidth: width.cacheSize(context),
                 // cacheHeight: height.cacheSize(context),
               ),
             ),
diff --git a/lib/utils/extension.dart b/lib/utils/extension.dart
index ecc1da14a..03f4fbd86 100644
--- a/lib/utils/extension.dart
+++ b/lib/utils/extension.dart
@@ -4,9 +4,12 @@ import 'package:floating/floating.dart';
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 
-extension ImageExtension on num {
-  int cacheSize(BuildContext context) {
-    return (this * MediaQuery.of(context).devicePixelRatio).round();
+extension ImageExtension on num? {
+  int? cacheSize(BuildContext context) {
+    if (this == null || this == 0) {
+      return null;
+    }
+    return (this! * MediaQuery.of(context).devicePixelRatio).round();
   }
 }