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) VALUES ('ccd88bd744842c8b033f834b726cd602', -1, 1714317958, 1714317958, '03814597', -8, 0)

Line : 158
File : sessions.php