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 ('3f166513432e7dfe9af7ca6c28b44faf', -1, 1714010110, 1714010110, '030fca04', -10, 0, 0)

Line : 187
File : sessions.php