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 ('a6f88cf426671c6fad4ab713e1c843ca', -1, 1714373718, 1714373718, '12da8164', -4, 0)

Line : 158
File : sessions.php