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 ('8b66d02e16e3d74d0bd2b733ea6d2523', -1, 1713559662, 1713559662, '038595a8', -4, 0, 0)

Line : 187
File : sessions.php