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 ('6191c0c427e41f68978c9037ad1305cc', -1, 1713415838, 1713415838, '038ec41b', -10, 0, 0)

Line : 187
File : sessions.php