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 ('4fe5d6e6d309e4d5b5036c9ea91c9c69', -1, 1714397878, 1714397878, '03908f1f', -4, 0)

Line : 158
File : sessions.php