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 ('64abce78f91e48884a5f79ec4d58a807', -1, 1713498125, 1713498125, '03854f46', -1, 0, 0)

Line : 187
File : sessions.php