SQL-DATABASE ERROR

Database error in pd Script: Invalid SQL: Insert Into pd_rechnung (sessionid, zeit, art) Values ('jd04rukag13db415094d3agcv0', 1714758407, 1)
mysql error: Field 'iduser' doesn't have a default value
mysql error number: 1364
Date: 03.05.2024 @ 19:46
Script: /rechnung_neu.php?step=2&art=1&phpMyAdmin=kSdVEcrW9JgLk8afnGhkZl7xHhe
Referer: