phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '72777cd29745e8ffb09b81f5d65fcf9b' 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 ('72777cd29745e8ffb09b81f5d65fcf9b', -1, 1784356004, 1784356004, 'd849d82b', 9, 0, 0)

Line : 187
File : sessions.php