From b2c8f8af71339465fa82c3c41ccff263f39e71bf Mon Sep 17 00:00:00 2001
From: Murtaza Sultani <sultani@data-quest.de>
Date: Thu, 7 Aug 2025 11:25:02 +0200
Subject: Resolve "JSON-API: UserSchema wirft Fehler bei unauthentifiziertem
 Nutzer"

Closes #5766

Merge request studip/studip!4411
---
 lib/classes/JsonApi/Schemas/User.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/classes/JsonApi/Schemas/User.php b/lib/classes/JsonApi/Schemas/User.php
index afb8cf8..fa79878 100644
--- a/lib/classes/JsonApi/Schemas/User.php
+++ b/lib/classes/JsonApi/Schemas/User.php
@@ -64,6 +64,10 @@ class User extends SchemaProvider
         $visibilities = $this->getVisibilities($user);
         $observer = $this->currentUser;
 
+        if (!$visibilities || !$observer) {
+            return [];
+        }
+
         $fields = [
             ['phone', 'privatnr', 'private_phone'],
             ['homepage', 'Home', 'homepage'],
-- 
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