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 ('f40c321efcfdbddaae20a810b4d2eb9d', -1, 1714610312, 1714610312, '038cf2a5', 12, 0)

Line : 158
File : sessions.php