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 ('706138fb72377168c7f514cf67e070f9', -1, 1713558573, 1713558573, '038590d9', -4, 0, 0)

Line : 187
File : sessions.php