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 ('1222db55fe40b0e9e35d5c92fc661602', -1, 1713924747, 1713924747, '0395d620', 3, 0, 0)

Line : 187
File : sessions.php