Script for sending e-mail - powershell

Question

I found one script online, which does quite simple work - sends e-mail to the specified address after the trigger is hit.
In the example below script should scan the path which I stated for the trigger which is: #task, then it expected that it should send e-mail with the text after #td.
It should be correct, but when I run it nothing happens - what I'm doing wrong?
I've got the following message in powershell:
enter image description here
# Unregister-Event FileCreated
Unregister-Event FileChanged
# Email-settings
$loginuser = 'xxx#gmail.com'
$loginpassword = 'password;'
$smtpserver = 'smtp.gmail.com'
$smtpport = 587
$sendfrom = 'xxx#gmail.com'
$sendto = 'add.task.9270372.1523940684#todoist.net'
# Folder-settings
$folder = 'D:\Google Drive\Other\Nirvana' # Enter the root path you want to monitor.
$filter = '*.*' # You can enter a wildcard filter here.
# In the following line, you can change 'IncludeSubdirectories to $true if required.
$fsw = New-Object IO.FileSystemWatcher $folder, $filter -Property #{IncludeSubdirectories = $false; NotifyFilter = [IO.NotifyFilters]'FileName, LastWrite' }
# Trigger-settings
$trigger = '#task'
$lookfor = '#td'
$replaceto = '#intasklist'
Register-ObjectEvent $fsw Changed -SourceIdentifier FileChanged -Action {
$name = $Event.SourceEventArgs.Name
$changeType = $Event.SourceEventArgs.ChangeType
$timeStamp = $Event.TimeGenerated
$fileContent = (Get-Content $folder$name)
# Write-Host "The file '$name' was $changeType at $timeStamp" -fore green
if ($fileContent -match $trigger) {
$fileContent | Select-String -Pattern ".*$($lookfor)" -AllMatches | ForEach-Object { $_.Matches } | ForEach-Object { $secpasswd = ConvertTo-SecureString $loginpassword -AsPlainText -Force; $cred = New-Object System.Management.Automation.PSCredential ($loginuser, $secpasswd); Send-MailMessage -To $sendto -From $sendfrom -Subject $_.Value -Body $name -SmtpServer $smtpserver -Port $smtpport -Credential $cred -UseSsl
$fileContent | ForEach-Object { $_ -replace $lookfor, $replaceto -replace " $($trigger)", '' -replace $trigger, '' } | Set-Content $folder$name }
}}
# To stop the monitoring, run the following commands:
# Unregister-Event FileChanged