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 ('d6126d8febb7f0bdb761f7790aff22f4', -1, 1713491471, 1713491471, '038e9028', -9, 0, 0)

Line : 187
File : sessions.php