Change that requires the update key is failing with "key: Is not extractable"

[maakle]

I saw that you recently changed that we need to include an update key.

I implemented it like you suggested:

let crypto: Crypto;
(async () => {
  try {
    crypto = await createIssuerCrypto();
    crypto = await crypto.generateKey(KeyUse.Signature, "signing");
    crypto = await crypto.generateKey(KeyUse.Signature, "recovery");
    crypto = await crypto.generateKey(KeyUse.Signature, "update");    
    const did = await new LongFormDid(crypto).serialize();
    crypto.builder.useUpdateKeyReference(crypto.builder.updateKeyReference);
    crypto.builder.useDid(did);
  } catch (error) {
    console.log(error);
  }
})();

Though the line where I generate the update key fails with the following message: (node:52954) UnhandledPromiseRejectionWarning: Error: key: Is not extractable at EcdsaProvider.checkExportKey

Are you aware of this or am I missing something? Would also be cool if you could update the demo App that shows the right approach.