fix the issue

src/Controller/ReportingEndpoint.php

@@ -114,17 +114,22 @@ class ReportingEndpoint extends ControllerBase {
    *   The Request object.
    */
   private function storeReportUriData(ReportingEndpointInterface $reporting_endpoint, array $report, Request $request) {
+    // Provide default values for the 'csp-report' data if the key is missing.
+    $cspReport = isset($report['csp-report']) ? $report['csp-report'] : [
+        'document-uri' => 'unknown',
+        // You can add other default values here if needed.
+    ];
 
     // Convert data to format expected by Reporting API.
-    $report = [
+    $reportData = [
       'age' => 0,
-      'body' => $report['csp-report'],
+      'body' => $cspReport,
       'type' => 'csp-violation',
-      'url' => $report['csp-report']['document-uri'],
+      'url' => $cspReport['document-uri'],
       'user_agent' => $request->headers->get('User-Agent'),
     ];
 
-    $this->storeReportToData($reporting_endpoint, [$report]);
+    $this->storeReportToData($reporting_endpoint, [$reportData]);
   }
 
   /**

[Patrick Kenny]

Drupal generally uses snake case ($csp_report), not camelCase.

[Patrick Kenny]

snake_case?