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 ('fa5088eea063e33c2c28a762838d92dd', -1, 1714134540, 1714134540, '12de43fb', 2, 0, 0)

Line : 187
File : sessions.php