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 ('a5ae1b0a243a02e02a1f0575c0391b6e', -1, 1713475178, 1713475178, '1275b6b3', 3, 0, 0)

Line : 187
File : sessions.php