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 ('4725e4be033f542832ce7b1ac36909ff', -1, 1747261390, 1747261390, '1277c065', -2, 0, 0)

Line : 189
File : sessions.php