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, session_admin) VALUES ('329c4b7a5869725cc5f59ae83dd0280f', -1, 1713582359, 1713582359, '1276b8ed', -4, 0, 0)

Line : 187
File : sessions.php