phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6b9fff14dca26441a4d8c57c5eaf4af7' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6b9fff14dca26441a4d8c57c5eaf4af7', -1, 1753776198, 1753776198, 'd849d848', 2, 0, 0)

Line : 187
File : sessions.php