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 ('2cd4cc3887cfa3d6e0d8ad597d81f30e', -1, 1713468135, 1713468135, '12777d87', 0, 0, 0)

Line : 187
File : sessions.php