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 ('762287f11bcfe2bd02245e97d4f39e3a', -1, 1713433497, 1713433497, '038ec41b', -9, 0, 0)

Line : 187
File : sessions.php