diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 2fdf907..0000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/.pubignore b/.pubignore
new file mode 100644
index 0000000..34bee9c
--- /dev/null
+++ b/.pubignore
@@ -0,0 +1,6 @@
+# Exclude from published package (see https://dart.dev/go/pubignore).
+.DS_Store
+test/.DS_Store
+test/mock/.DS_Store
+coverage/
+coverage_badge.svg
diff --git a/lib/src/helper/Automate.dart b/lib/src/helper/Automate.dart
index 09e4a42..52d4378 100644
--- a/lib/src/helper/Automate.dart
+++ b/lib/src/helper/Automate.dart
@@ -63,9 +63,7 @@ class Automate {
       if (availableKeys.length == 1) {
         var varContent = entry[key];
         if (varContent is String || varContent is List || varContent is Map) {
-          if (callback != null) {
-            entry[key] = callback(varContent);
-          }
+          entry[key] = callback(varContent);
         }
       } else {
         availableKeys.remove(key);
diff --git a/pubspec.yaml b/pubspec.yaml
index cca5f5f..b88c377 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: contentstack_utils
 description: Utils package for Contentstack-dart
-version: 1.1.1
+version: 2.0.0
 homepage: https://www.contentstack.com
 
 environment:
diff --git a/test/.DS_Store b/test/.DS_Store
deleted file mode 100644
index 910c33b..0000000
Binary files a/test/.DS_Store and /dev/null differ
diff --git a/test/mock/.DS_Store b/test/mock/.DS_Store
deleted file mode 100644
index c8beb82..0000000
Binary files a/test/mock/.DS_Store and /dev/null differ