phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'aa6c6bf200c554fe9fcc2d73f770f136' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('aa6c6bf200c554fe9fcc2d73f770f136', -1, 1768708348, 1768708348, 'd849d8d9', -9, 0)

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