diff --git a/src/Appwrite/Utopia/Request/Filters/V18.php b/src/Appwrite/Utopia/Request/Filters/V18.php
index 8564dad47b..20241e34a7 100644
--- a/src/Appwrite/Utopia/Request/Filters/V18.php
+++ b/src/Appwrite/Utopia/Request/Filters/V18.php
@@ -14,7 +14,7 @@ class V18 extends Filter
                 unset($content['otp']);
                 break;
             case 'functions.create':
-                $content['templateVersion'] = $content['templateBranch'];
+                $content['templateVersion'] = $content['templateBranch'] ?? "";
                 unset($content['templateBranch']);
                 break;
         }
diff --git a/tests/e2e/Services/Functions/FunctionsCustomServerTest.php b/tests/e2e/Services/Functions/FunctionsCustomServerTest.php
index b4d120d604..925bda5281 100644
--- a/tests/e2e/Services/Functions/FunctionsCustomServerTest.php
+++ b/tests/e2e/Services/Functions/FunctionsCustomServerTest.php
@@ -454,8 +454,8 @@ class FunctionsCustomServerTest extends Scope
         $entrypoint = null;
         $rootDirectory = null;
         $commands = null;
-        foreach($template['body']['runtimes'] as $runtime) {
-            if($runtime["name"] !== $runtimeName) {
+        foreach ($template['body']['runtimes'] as $runtime) {
+            if ($runtime["name"] !== $runtimeName) {
                 continue;
             }
 
@@ -2419,4 +2419,30 @@ class FunctionsCustomServerTest extends Scope
 
         $this->assertEquals(204, $response['headers']['status-code']);
     }
+
+    public function testCreateFunctionWithResponseFormatHeader()
+    {
+        $response = $this->client->call(Client::METHOD_POST, '/functions', array_merge([
+            'content-type' => 'application/json',
+            'x-appwrite-project' => $this->getProject()['$id'],
+            'x-appwrite-response-format' => '1.5.0', // add response format header
+        ], $this->getHeaders()), [
+            'functionId' => ID::unique(),
+            'name' => 'Test',
+            'runtime' => 'php-8.0',
+            'entrypoint' => 'index.php',
+            'timeout' => 15,
+        ]);
+
+        $this->assertEquals(201, $response['headers']['status-code']);
+
+        // Cleanup : Delete function
+        $response = $this->client->call(Client::METHOD_DELETE, '/functions/' . $response['body']['$id'], [
+            'content-type' => 'application/json',
+            'x-appwrite-project' => $this->getProject()['$id'],
+            'x-appwrite-key' => $this->getProject()['apiKey'],
+        ], []);
+
+        $this->assertEquals(204, $response['headers']['status-code']);
+    }
 }