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 ('12da10486961620701021042d1d731b6', -1, 1714616032, 1714616032, '340f3f91', 23, 0)

Line : 158
File : sessions.php