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 ('002a8b3ade4dd2f6a0ae7f60fdcacba1', -1, 1713924862, 1713924862, '12da267d', -7, 0, 0)

Line : 187
File : sessions.php