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 ('4558ce6283c5f9ec0d7d1f61054167f0', -1, 1708794333, 1708794333, '03ef4c19', -2, 0, 0)

Line : 187
File : sessions.php