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 ('7a2b86e7c7f2cd30e95903b6f29c2350', -1, 1713624762, 1713624762, '12ddc584', -4, 0, 0)

Line : 187
File : sessions.php