Error when using in Testnet

[felipe-heredia]

• Waves Signer version: v1.0.7 latest
• ProviderCloud version: v1.0.2 latest

My config for login in Testnet:

class SignerEmailHandler {
  signer

  constructor() {
    this.signer = new Signer({
      NODE_URL: 'https://nodes-testnet.wavesnodes.com',
    })
    this.signer.setProvider(new ProviderCloud())
  }
}

When I try to log in with ProviderCloud in Waves.Exchange Testnet, my browser show this: