phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9e979b4a4f0c020cc3640a516135978f' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('9e979b4a4f0c020cc3640a516135978f', -1, 1782631617, 1782631617, 'd849d905', 2, 0)

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