Powershell Invoke-Webrequest "No file part in file" CURL to Powershell - powershell

Question

I'm trying to convert this working request done in Cygwin to Powershell:
Cygwin (Working):
curl -k -u curl:Password -X PUT -F "file=$($_)" https://$($appliance)/wse/customblockpage/file/en
Powershell (not working):
Invoke-Webrequest -Uri "https://$($appliance)/wse/customblockpage/file/en" -Method Put -Infile "$homePath\$($_)" -Credential $cred
Here is the error I get:
Invoke-Webrequest : { "Error": "No file part in file", "Result": "Failure" }
At line:1 char:1
+ Invoke-Webrequest https://{IP Address Masked}/wse/customblockpage/file/en ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-WebRequest], WebException
+ FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand

Answer 1

The { "Error": "No file part in file", "Result": "Failure" } is actually the error response from the web server and not a specific PowerShell error message.
In your cURL invocation, you are specifying form data with the -F flag, yet you don't appear to be doing the same in PowerShell.
In PowerShell, you can specify form data using the -Body flag like this:
Invoke-Webrequest -Uri "https://example.com/" -Method Put -Body #{ "file" = "hello.txt" }
If you need to send the actual content of the file, then you can use this as your -Body argument:
-Body #{ "file" = (Get-Content hello.txt) }