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) VALUES ('805bc7618feb77f227e913d4cd2e0000', -1, 1714234778, 1714234778, '0315f877', -7, 0)

Line : 158
File : sessions.php