Powershell script to check for a string in a file and send email notification

I am working on a powershell script that is working fine for other string search but not this one. I was hoping to get help why

Power shell script construct is here:

$file = "C:\temp\test.log" 
$ConnectionReset = Get-Content $file |
 Select-String "connection read failed" -SimpleMatch |
  select -expand line |
   foreach {
              if($_ -match '(.+)java.lang.OutOfMemoryError(.+)'){
              new-object psobject -Property @{
Date = [datetime]$matches[1].trim('#<').split("CDT>")[0]
}|
where {$_.Date -gt (Get-Date).AddMinutes(-15)}
            }
}
If ($ConnectionReset){
 foreach ($line in $ConnectionReset){

# Send-MailMessage -From "xxx <test@gmail.com>" -Subject "Error" -To "XYZ <test@gmail.com>",  -SmtpServer smtp.test.com
 }}

Line of log to parse out this error is here:

####<Sep 17, 2019 11:17:17 AM CDT> <Error> <Socket> <xx> <HFMWeb0> <ExecuteThread: '2' for queue: 'weblogic.socket.Muxer'> <<WLS Kernel>> <> <> <1568737037159> <BEA-000421> <Uncaught Throwable in processSockets
 java.lang.OutOfMemoryError: PermGen space.
java.lang.OutOfMemoryError: PermGen space
> 

This is the error i am getting:

Cannot convert value " java.lang." to type "System.DateTime". Error: "The string was not recognized as a valid DateTime. There is an unknown word starting at index 1."
At line:9 char:15
+               new-object psobject -Property @{
+               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvalidCastParseTargetInvocationWithFormatProvider