Script Working on Powershell console but not on Powershell ISE - powershell

Question

This is error message i get when running code with Powershell ISE:
Exception calling "Substring" with "1" argument(s): "StartIndex cannot
be less than zero.
Parameter name: startIndex"
At C:\Users\3N16M4\Desktop\Untitled3.ps1:8 char:1
$Last=$Role.Substring($Role.IndexOf('FE'))
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : ArgumentOutOfRangeException
$text ="`n"
$String= Read-Host -Prompt 'Please Enter Value '
$Role=Get-ChildItem -Path 'C:\Users\3N16M4\Desktop\New folder\*.txt' -Recurse |Select-string -Pattern $String -SimpleMatch -Context 9,0 | Out-String -Stream |Select-Object -Index 1
$Last=$Role.Substring($Role.IndexOf('FE'))
$text
Write-host ('The Answer is: {0}' -f $Last)
$text
Read-Host -Prompt 'Press Enter to exit'
However running this same code with VScode and powershell console gives no errors and runs just fine , so i was wondering what could be causing that.

Answer 1

$role = "you are the winner of a all expense paid trip to the beautiful beaches of Cancun. There are few exceptions that a such as this script must be completed before you read all of the details. The developer that is assisting in the writing of this script will require a new question if you more help. It was a joy and pleasure to see this issue resolved." ;
Write-host "This String is $(($Role).length) characters long.";
$MaxDisplayWidth = 120;
$role -split '(\w{$MaxDisplayWidth})' | Where-Object {$_};

Answer 2

First, do a proper check for your variables because:
$Role.IndexOf('FE')
Will return -1 when it cannot find the text 'FE' in $Role.
When it returns -1 the next statement:
$Role.Substring(-1)
Will fail with the above error.
This means that the issue lies in how $Role is filled. Output $Role to see if it is returning what you are expecting. Maybe $String is being set differently?

Answer 3

Post the output.
$text ="`n"
$String= Read-Host -Prompt 'Please Enter Value '
$Foundfiles = Get-ChildItem -Path 'C:\temp\*.txt' -Recurse
If ($Foundfiles) {
Write-host "Files have been found. The problem is not here" -ForegroundColor green}
Else { Write-host "Error No files Found" -ForegroundColor Red }
$FilesThatContaintheString = $Foundfiles | Select-string -Pattern $String -SimpleMatch -Context 9,0
If ($FilesThatContaintheString) {Write-host "Found value in a file" -ForegroundColor Green}
Else { write-host "Did not find the string in any of the files." -ForegroundColor red}
$convertingToStrings = $FilesThatContaintheString | Out-String -Stream
If ($convertingToStrings) {write-host "Out-string works" -ForegroundColor Green}
Else {Write-host "Out-string is not working" -ForegroundColor red }
$selectTheSecoundOutputedString = $convertingToStrings |Select-Object -Index 1
If ($selectTheSecoundOutputedString) {
Write-host "If you see this then the issue is somewhere else" -ForegroundColor Yellow}
Else {Write-host 'Did not find a second string try $index 0' -ForegroundColor Red}
$Role = $selectTheSecoundOutputedString
Write-host "The value of Role is $role"
Write-host "The Index of FE is $($Role.IndexOf('FE'))"
$Last=$Role.Substring($Role.IndexOf('FE'))
$text
Write-host ('The Answer is: {0}' -f $Last)
$text
Read-Host -Prompt 'Press Enter to exit'