getList.php returns HTTP 500 after successful login via public API

[siemwillemse-beep]

alling GET /apis/public/getList.php consistently returns HTTP 500 with {"result":false,"error":"server error"} immediately after a successful
login via POST /apis/public/login.php.

Steps to reproduce

1. POST https://gdtf-share.com/apis/public/login.php
   - Body: form-encoded user=&password=
   - Response: HTTP 200, returns PHPSESSID cookie
2. GET https://gdtf-share.com/apis/public/getList.php
   - Headers: Cookie: PHPSESSID=
   - Response: HTTP 500 {"result":false,"error":"server error"}

Notes

• Reproduced with multiple independent API clients, ruling out a client-side issue
• Login succeeds and the session cookie is confirmed valid
• downloadFile.php has not been tested as getList.php is needed first to obtain a revision ID

Question

Is additional account verification required to use getList.php? Is this a known server-side issue?