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 ('f3f9ff6b0541e2d8b0408417f5c8e7ad', -1, 1713899347, 1713899347, '038cb993', 3, 0, 0)

Line : 187
File : sessions.php