SS5 compatibility

.gitignore

@@ -7,3 +7,6 @@
 **/css/bourbon
 **/.sass-cache
 node_modules/
+vendor/
+public/
+composer.lock

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": [
         {

src/BulkTools/HTTPBulkToolsResponse.php

@@ -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);
                 }