phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3a3480894a9ebc87f847b91923fad402' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('3a3480894a9ebc87f847b91923fad402', -1, 1769760871, 1769760871, 'd849d86e', 2, 0, 0)

Line : 187
File : sessions.php