phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '39cee6a8a81a027a0d8f16e44c8f7847' 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 ('39cee6a8a81a027a0d8f16e44c8f7847', -1, 1771593334, 1771593334, 'd849d890', 5, 0, 0)

Line : 187
File : sessions.php