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 ('92b5aab746cf5d1b607359b9da6e302d', -1, 1713408173, 1713408173, '03856dd3', -10, 0, 0)

Line : 187
File : sessions.php