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 ('4d3c06ebe6a736376c7a884f447f3c34', -1, 1715938670, 1715938670, '12e042c4', -4, 0)

Line : 158
File : sessions.php