phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9f35b13b736d3b4ff51511c7449e1678' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('9f35b13b736d3b4ff51511c7449e1678', -1, 1772234789, 1772234789, 'd849d834', -9, 0)

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