phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'aaa796f901b4ef9addbc32124698fb01' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('aaa796f901b4ef9addbc32124698fb01', -1, 1771300117, 1771300117, 'd849d87b', -9, 0)

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