计划任务备份网站，采用FTP存储失败？

连接服务器失败!
Traceback (most recent call last):
  File "/www/server/panel/plugin/ftp/ftp_main.py", line 381, in <module>
    data = backup.backupSite(sys.argv[2], sys.argv[3])
  File "/www/server/panel/plugin/ftp/ftp_main.py", line 68, in backupSite
    sql.table('backup').add('type,name,pid,filename,addtime,size',('0',os.path.basename(filename),pid,'ftp',endDate,os.path.getsize(filename)))
  File "/usr/lib64/python2.7/genericpath.py", line 49, in getsize
    return os.stat(filename).st_size
OSError: [Errno 2] No such file or directory: '/www/backup/site/Web_cm_20200306_152509.tar.gz'

我把这个备份该目录了，为什么ftp还是用原来的目录呢？