phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8dbda44d508b6b91f1acb9a0e58df4d2', -1, 1713965009, 1713965009, '12be9cd4', -4, 0, 0)

Line : 187
File : sessions.php