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 ('f2c4cf5cd6a2269da836569928a09329', -1, 1713532894, 1713532894, '340e7e4a', 2, 0, 0)

Line : 187
File : sessions.php