phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '78f658c50b99c36050aef9bbb016ae66' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('78f658c50b99c36050aef9bbb016ae66', -1, 1768082617, 1768082617, 'd849d83b', 51, 0)

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