get string in logfile

$LogFile = "C:\TEMP\deploy.log"  
$Code = 'TEST'


$LastLines = Get-Content -path $LogFile  | select -Last 30 | select-string $Code


Select-String : Cannot bind argument to parameter 'Path' because it is an empty string.
At line:1 char:36
+ $StringExist = Select-String -path $LastLines -pattern $SearchCode
+                                    ~~~~~~~~~~
    + CategoryInfo          : InvalidData: (:) [Select-String], ParameterBindingValidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationErrorEmptyStringNotAllowed,Microsoft.PowerShell.Commands.Sele
   ctStringCommand

Thank you

Best regards