FTP
504 Parameter Not Implemented
Command not implemented for that parameter. The command is supported but not with the specific parameter value provided.
当您看到此代码时
When you use an unsupported transfer type or mode, such as TYPE E (EBCDIC) on a server that only supports ASCII and binary.
如何修复
Use a supported parameter value. Check the server documentation or use FEAT to see which parameter options are available.