我想使用PowerShell PSFTP module通过FTP从另一台服务器下载一些文件夹和文件。我想从指定地址下载所有文件和文件夹。
根据this的答案，我写了下一个脚本：

$User = "xxxxx"
$Password = ConvertTo-SecureString "xxxx" -AsPlainText -Force
$Credentials = New-Object System.Management.Automation.PSCredential ($User, $Password)

$ftp_server = "ftp://backup.xxxxx.eu"
$ftp_path = "backup_old/xxx/xx_Config_Backup"
$local_path = "D:\Backup\backup_old\xxx"

Set-FTPConnection -Credentials $Credentials -Server $ftp_server -EnableSsl -ignoreCert -UsePassive
Get-FTPChildItem -path $ftp_path -Recurse | Get-FTPItem -localpath $local_path -Overwrite -Verbose #-RecreateFolders

当ftp_path的文件夹只包含文件时，此脚本可以正常工作。

ContentLength           : -1
Headers                 : {}
SupportsHeaders         : True
ResponseUri             : ftp://backup.xxxxx.eu/
StatusCode              : ClosingData
StatusDescription       : 226 Transfer complete.
                          
LastModified            : 01.01.0001 0:00:00
BannerMessage           : 220 Microsoft FTP Service
                          
WelcomeMessage          : 230 User logged in.
                          
ExitMessage             : 221 Goodbye.
                          
IsFromCache             : False
IsMutuallyAuthenticated : False
ContentType             : 

VERBOSE: Performing the operation "Download item: 'ftp://backup.xxxxx.eu
/backup_old/xxx/QlikView/xxx.qvw'" on target "".
226 Transfer complete.

VERBOSE: Performing the operation "Download item: 'ftp://backup.xxxxx.eu
/backup_old/xxx/QlikView/xxxFulFillment.qvw'" on target "D:\Backup\backu
p_old\xxx\xxx.qvw".
226 Transfer complete.

但是，当它包含其他文件夹的文件，它会创建一个文件大小为零命名为相同的文件夹和崩溃与550错误。

ContentLength           : -1
Headers                 : {}
SupportsHeaders         : True
ResponseUri             : ftp://backup.xxxxx.eu/
StatusCode              : ClosingData
StatusDescription       : 226 Transfer complete.
                          
LastModified            : 01.01.0001 0:00:00
BannerMessage           : 220 Microsoft FTP Service
                          
WelcomeMessage          : 230 User logged in.
                          
ExitMessage             : 221 Goodbye.
                          
IsFromCache             : False
IsMutuallyAuthenticated : False
ContentType             : 

VERBOSE: Performing the operation "Download item: 'ftp://backup.xxxxx.eu
/backup_old/xxx/xx_Config_Backup/AlertSender'" on target "".
Get-FTPItem : Exception calling "GetResponse" with "0" argument(s): "The remote
 server returned an error: (550) File unavailable (e.g., file not found, no acc
ess)."
At C:\PS_Scrips\PSFTP_1.ps1:13 char:45
+ ...  -Recurse | Get-FTPItem -localpath $local_path -Overwrite -Verbose #- ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorExcep 
   tion
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorExceptio 
   n,Get-FTPItem

请帮助我了解问题的原因并解决它。谢谢。
另外。
1.添加-RecreateFolders：

Get-FTPChildItem -path $ftp_path -Recurse | Get-FTPItem -localpath $local_path -Overwrite -Verbose -RecreateFolders

导致了同样的错误
Get-FTPItem：使用“0”参数调用“GetResponse”时出现异常：“远程服务器返回错误：（550）文件不可用（e.例如，未找到文件，无法访问）。“在C：\PS_Scrips\PSFTP_1。ps1：13 char：45 + .... -递归|Get-FTPItem -localpath $local_path -Overwrite -Verbose -R。.. + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~未指定：（：）[Write-Error]，WriteErrorExcep tion + FullyQualifiedErrorId：Microsoft.PowerShell.命令.WriteErrorExceptio n，Get-FTPItem1.仅执行Get-FTPChildItem -path $ftp_path -Recurse`返回https://pastebin.com/t9F5Th59

1. 2023/04/07它坏了，但我不知道为什么。

Get-FTPChildItem -path $ftp_path -Recurse |
    Where-Object { $_.Dir -ne "DIR" } |
    Get-FTPItem -localpath $local_path -Overwrite -Verbose  -RecreateFolders

再次得到相同的错误：

Get-FTPChildItem : Exception calling "GetResponse" with "0" argument(s): "The remote serve
r returned an error: (550) File unavailable (e.g., file not found, no access)."
At line:14 char:1
+ Get-FTPChildItem -path $ftp_path -Recurse |
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Get-FTPCh 
   ildItem