diff --git a/.gitignore b/.gitignore
index 9034277..4a02812 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,7 @@
 .transifexrc
 **/css/bourbon
 **/.sass-cache
-node_modules/
\ No newline at end of file
+node_modules/
+vendor/
+public/
+composer.lock
diff --git a/composer.json b/composer.json
index 816f11d..83f4ae7 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,12 @@
     "type": "silverstripe-vendormodule",
     "description": "SilverStripe GridField component to upload images/files and edit records in bulk",
     "homepage": "https://github.com/colymba/GridFieldBulkEditingTools",
-    "keywords": ["silverstripe", "bulk upload", "image upload", "gridfield bulk upload"],
+    "keywords": [
+        "silverstripe",
+        "bulk upload",
+        "image upload",
+        "gridfield bulk upload"
+    ],
     "license": "BSD-3-Clause",
     "authors": [
         {
diff --git a/src/BulkTools/HTTPBulkToolsResponse.php b/src/BulkTools/HTTPBulkToolsResponse.php
index c0c0ac1..a498068 100644
--- a/src/BulkTools/HTTPBulkToolsResponse.php
+++ b/src/BulkTools/HTTPBulkToolsResponse.php
@@ -123,7 +123,7 @@ class HTTPBulkToolsResponse extends HTTPResponse
      */
     public function addHeader($header, $value)
     {
-        if($header === "content-type") {
+        if ($header === "content-type") {
             return $this;
         }
         return parent::addHeader($header, $value);
@@ -139,7 +139,7 @@ class HTTPBulkToolsResponse extends HTTPResponse
      */
     public function removeHeader($header)
     {
-        if($header === "content-type") {
+        if ($header === "content-type") {
             return $this;
         }
         return parent::removeHeader($header);
@@ -333,7 +333,7 @@ class HTTPBulkToolsResponse extends HTTPResponse
             );
 
             foreach ($this->successRecords as $record) {
-                $data = array('id' => $record->ID, 'class' => str_replace('\\', '\\\\', $record->ClassName));
+                $data = array('id' => $record->ID, 'class' => str_replace('\\', '\\\\', $record->ClassName ?? ''));
                 if (!$this->removesRows) {
                     $data['row'] = $this->getRecordGridfieldRow($record);
                 }