function Foobar {
    throw "Error in FooBar"
}

function Bar {
    FooBar
}

function Foo {
    Bar
}

try {
        $sb = ${function:Foo}
        $sb.Invoke()
    }
catch {
    $ErrorMessage = $_.Exception.Message
    $line = $_.InvocationInfo.ScriptLineNumber
    $script_name = $_.InvocationInfo.ScriptName
    write-host "<--Error: Occurred on line $line in script $script_name."
    Write-host "<--Error: $ErrorMessage"
}

$sb = ${function:Foo}
$sb.Invoke()

$func_info = get-command Foo
Invoke-Command $func_info.ScriptBlock