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 ('85720eaf58b0e3ba28f57797242b2558', -1, 1713945877, 1713945877, '031042ce', -10, 0, 0)

Line : 187
File : sessions.php