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) VALUES ('4bed4f1bb1c5bae7596287b14967abd1', -1, 1736494776, 1736494776, '039339ef', 23, 0)

Line : 158
File : sessions.php