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 ('80f57ee3e50e94c5b7ecfba2f0f517d2', -1, 1713541514, 1713541514, '038d29bb', -4, 0, 0)

Line : 187
File : sessions.php