phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6f9a6ec29b427d8817fedd46c5d6ba5d' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6f9a6ec29b427d8817fedd46c5d6ba5d', -1, 1776132793, 1776132793, 'd849d86a', 3, 0, 0)

Line : 187
File : sessions.php