由6.2.5升级到6.3.1成功后，seafile.sh 启动正常，seahub.sh start启动也正常，但是我是用了nginx的代理的，用./seahub.sh start-fastcgi启动失败，出现如下错误，请问怎么解决？谢谢
[root@localhost seafile-server-6.3.1]# ./seahub.sh restart-fastcgi
Seahub is not running
LC_ALL is not set in ENV, set to en_US.UTF-8
Starting seahub (fastcgi) at 127.0.0.1:8000 …
Warning: File comment has changed since version 6.3, while table base_filecomment is not migrated yet, please consider migrate it according to v6.3.0 release note, otherwise the file comment feature will not work correctly.
Unknown command: ‘runfcgi’
Type ‘manage.py help’ for usage.
Error:Seahub failed to start.