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 ('f76d63c37c2f0948bb3600be1f7c8204', -1, 1713558331, 1713558331, '12d8e93a', -1, 0, 0)

Line : 187
File : sessions.php