phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '551989fc6359e2009672ed8fbb4db3bb' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('551989fc6359e2009672ed8fbb4db3bb', -1, 1768270711, 1768270711, 'd849d8a4', -9, 0)

Line : 180
File : /www/includes/sessions.php