X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/ee6a2339b654d1a4537319fb1548fd311549dfc7..refs/pull/4467/head:/app/Util/CspService.php

diff --git a/app/Util/CspService.php b/app/Util/CspService.php
index f9ab666ac..227ec8e0b 100644
--- a/app/Util/CspService.php
+++ b/app/Util/CspService.php
@@ -126,7 +126,7 @@ class CspService
 
     protected function getAllowedIframeHosts(): array
     {
-        $hosts = config('app.iframe_hosts', '');
+        $hosts = config('app.iframe_hosts') ?? '';
 
         return array_filter(explode(' ', $hosts));
     }