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 ('ad1cfeb20efdb3c0e0c11a479fe5b9e2', -1, 1713871143, 1713871143, '0389a1de', -2, 0, 0)

Line : 187
File : sessions.php