diff --git a/geocoding_android/CHANGELOG.md b/geocoding_android/CHANGELOG.md
index c6c358f..a45a665 100644
--- a/geocoding_android/CHANGELOG.md
+++ b/geocoding_android/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 4.0.1
+
+* Resolved issue #271 where the app could crash if the onError message was null. The error message is now properly handled as nullable.
+
 ## 4.0.0
 
 * **BREAKING CHANGES** Please update to Flutter 3.29+ before updating to this version
diff --git a/geocoding_android/android/src/main/java/com/baseflow/geocoding/MethodCallHandlerImpl.java b/geocoding_android/android/src/main/java/com/baseflow/geocoding/MethodCallHandlerImpl.java
index eb2d15c..4bd808a 100644
--- a/geocoding_android/android/src/main/java/com/baseflow/geocoding/MethodCallHandlerImpl.java
+++ b/geocoding_android/android/src/main/java/com/baseflow/geocoding/MethodCallHandlerImpl.java
@@ -129,10 +129,10 @@ public void onGeocode(List<Address> addresses) {
             }
 
             @Override
-            public void onError(String errorMessage) {
+            public void onError(@Nullable String errorMessage) {
                 result.error(
                         "IO_ERROR",
-                        String.format(errorMessage),
+                        errorMessage != null ? errorMessage : "Unknown error occurred",
                         null);
             }
         });
@@ -163,10 +163,10 @@ public void onGeocode(List<Address> addresses) {
             }
 
             @Override
-            public void onError(String errorMessage) {
+            public void onError(@Nullable String errorMessage) {
                 result.error(
                         "IO_ERROR",
-                        String.format(errorMessage),
+                        errorMessage != null ? errorMessage : "Unknown error occurred",
                         null);
             }
         });
@@ -198,10 +198,10 @@ public void onGeocode(List<Address> addresses) {
                     }
 
                     @Override
-                    public void onError(String errorMessage) {
+                    public void onError(@Nullable String errorMessage) {
                         result.error(
                                 "IO_ERROR",
-                                String.format(errorMessage),
+                                errorMessage != null ? errorMessage : "Unknown error occurred",
                                 null);
                     }
                 });
diff --git a/geocoding_android/pubspec.yaml b/geocoding_android/pubspec.yaml
index f1d72e5..2ee6895 100644
--- a/geocoding_android/pubspec.yaml
+++ b/geocoding_android/pubspec.yaml
@@ -1,6 +1,6 @@
 name: geocoding_android
 description: A Flutter Geocoding plugin which provides easy geocoding and reverse-geocoding features.
-version: 4.0.0
+version: 4.0.1
 repository: https://github.com/baseflow/flutter-geocoding/tree/main/geocoding_android
 issue_tracker: https://github.com/Baseflow/flutter-geocoding/issues