Invalid RSA key' when trying to load RSA public key in the Turbo LockBox 2 most basic code (just 2 lines of code)

Question

I have the most basic Turbo LockBox 2 code that tries to load public RSA key that is generated with https://travistidwell.com/jsencrypt/demo/

Here is the unit:

unit MainFormU;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, LbCipher, LbClass, LbAsym, LbRSA,
  Vcl.StdCtrls;

type
  TMainForm = class(TForm)
    LbRSA: TLbRSA;
    LoadBtn: TButton;
    procedure LoadBtnClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  MainForm: TMainForm;

implementation

{$R *.dfm}

const
  //skeypub=string('MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBALPllOJsy3XNdicjBHT2MaxT7q74/vcKcWfZG4SBiJY0KGtbavsMpntgFPeqdQ4mDUEwpU6aWX7E3dXopRx9kXECAwEAAQ==');
skeypub=string(
'-----BEGIN PUBLIC KEY-----'+
'MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBALPllOJsy3XNdicjBHT2MaxT7q74/vcK'+
'cWfZG4SBiJY0KGtbavsMpntgFPeqdQ4mDUEwpU6aWX7E3dXopRx9kXECAwEAAQ=='+
'-----END PUBLIC KEY-----');
  {
  skeyprv='MIIBOgIBAAJBALPllOJsy3XNdicjBHT2MaxT7q74/vcKcWfZG4SBiJY0KGtbavsM'+
    'pntgFPeqdQ4mDUEwpU6aWX7E3dXopRx9kXECAwEAAQJATvKtASVPsPYnKQvEE/RL'+
    'Xl5DPESH2DCcDkAIRIF4SLoCGHLu2cbi2YKpLJSNk34QdH4Vt1itadRIQu2SIs1G'+
    'AQIhAP2hKduEbtsZHgRDqMHYMEhKglbhbPaZ/AR3qg2oKbthAiEAtZQBILGWZGfB'+
    'GjB9Hn5RqcZxHpI4MbYjLxdb4AnMIBECIAzAcJlP1D8ByUePm0l7tBm+XUU++jp/'+
    'zXLwDUW4gbihAiEAsrA6A+B/rcNlBs7c8ltBJiBBReKDJnilWzxTj8BUfuECIBWY'+
    'nQUs9nKCzJAdoxmuTwH18odUlinGYGj2BNlPJ+dP'; }

procedure TMainForm.LoadBtnClick(Sender: TObject);
var S: TStringStream;
begin
  S:=TStringStream.Create(skeypub);
  LbRSA.PublicKey.LoadFromStream(S);
end;

end.

and here is the most basic component:

object LbRSA: TLbRSA
  PrimeTestIterations = 20
  KeySize = aks512
  Left = 184
  Top = 56
end

How to overcome 'Invalid RSA key' error message? Maybe my source code is not UTF8 formatted and that is why the skeypub string is not the valid Unicode string?