Fixed OIDC Logout

[bookstack] / app / Access / Oidc / OidcService.php

diff --git a/app/Access/Oidc/OidcService.php b/app/Access/Oidc/OidcService.php
index bd4964c574fc3d8b721c1af33c62a4aa97f1f374..d699204bb929167c4524cd64e8f125fd93549bd5 100644 (file)
--- a/app/Access/Oidc/OidcService.php
+++ b/app/Access/Oidc/OidcService.php
@@ -301,7 +301,7 @@ class OidcService
     public function logout() {
 
         $config = $this->config();
-        $app_url = env('APP_URL', null);
+        $app_url = env('APP_URL', '');
         $end_session_endpoint = $config["end_session_endpoint"];
 
         $oidctoken = session()->get("oidctoken");