NFCTagReader Problem

Hi all, i'm new here, just started learning iOS in Swift, i have a project i've been working on and it involves NFC tags, I know that just recently with the release of iOS13 we can read and write to NFC Tags, i'm having an issue with the NFCTagReaderSession, I think my code is fine but when I run my app i get the following Error.

Error: Error Domain=NFCError Code=202 "Session invalidated unexpectedly" UserInfo={NSLocalizedDescription=Session invalidated unexpectedly}

I've searched everywhere and the few descriptions i've found tell me that I need to add a few things such as the Entitlement of Associatged Domains, so i went ahead and added applinks:example.com

I have also added the following to my plist4

<key>NFCReaderUsageDescription</key>
<string>NFC Tag!</string>

<key>com.apple.developer.nfc.readersession.formats</key>
  <array>
  <string>TAG</string>
  </array>

I'm using an iPhone X running iOS 13.1.2 and i am using xCode 11.1

Does anyone have any idea of what else I might be missing, or could it be that there's a bug in the SDK?

Any help will be greatly appreciated.

Thanks,

Walter