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 ('c0b0d4d151270ca7d42650531f13215b', -1, 1713419654, 1713419654, '03108201', -8, 0, 0)

Line : 187
File : sessions.php