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) VALUES ('27cebae498911c49b766641a0b1cb006', -1, 1714450450, 1714450450, '12dd6247', -4, 0)

Line : 158
File : sessions.php