Powershell Remote file copy is not working - powershell

Question

I am trying to copy files remotely on several IIS servers from one source server.
sourcepath is a UNC path like \\server\c$\path\ and destinationpath is a local folder c:\data\destination\
The strange thing is when I run this on the local server this will work perfectly.
$cmd = $sqlConnection.CreateCommand()
$cmd.CommandText ="SELECT * from infrastructure"
$Serverinfo = $cmd.ExecuteReader()
try
{
while ($Serverinfo.Read())
{
$servername = $Serverinfo.GetValue(1)
$location = $Serverinfo.GetValue(2)
#Invoke-Command -ComputerName $servername { new-item -Path $Using:destinationpath -name $Using:versionnumber -Itemtype directory }
Invoke-Command -ComputerName $servername { Copy-Item -Path $Using:sourcepath -destination $Using:destinationpath }
#Invoke-Command -ComputerName $servername {Import-Module WebAdministration ; New-WebApplication -force -Site "Default Web Site" -Name $Using:versionnumber -PhysicalPath $Using:destinationpath$Using:versionnumber }
}
}

Answer 1

What you have posted is incomplete without a catch block and source and destination path defined as others said.
But what I can see here as a possible cause even if you mention all above three constrains.
You will face issues with credential delegation . You are remoting to one server using PSRP and copying one file to that machine and you are taking your source file from a UNC path which requires some authentication.
I could give you two better alternatives, of course 1st once could be the proper solution.
If you are in PS 5.o or later, you can use -ToSession parameter of Copy-Item cmdlet.
$Session = New-PSSession -ComputerName $ServerName
Copy-Item -SourcePath \\\Server\c$\path -Destination c:\data\Destination-ToSession $Session
For more info Get-Help Copy-Item
Edit:
The second one:
Copy-Item -Path <Sourcepath> -DestinationPath \\destinataionserver\c$\folder
from source to the destination by accessing the shared folder of the destination system.