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 ('241da0d35f1cd910cc4985519217f72e', -1, 1713992811, 1713992811, '0395fc25', -10, 0, 0)

Line : 187
File : sessions.php