Either the file (".\jeltestpdate.csv") is not in whatever is the current directory, the file name is incorrect, or the file is in some other directory.
Try replacing the 1st line of your script with these two lines:
$p = (Get-Location).Path
Import-Csv -Delimiter ";" -Path ( ("{0}\{1}" -f $p, "jeltestpdate.csv") ) | ForEach-Object {
If the file still isn't found you'll at least know the full path that was used and you can either adjust the script accordingly or correct the file name.