Error: Expected pubKey to be of length 64

I met some wrong issues when I run one demo example from offical github, which is mpc-core-kit-react-popup-example. The issues was happened when I clickcd these button of BlockChain Calls part, worng message is Uncaught (in promise)

I notice when the local service is started, if we use port 3000, serivce can jump to the Google login service page normally. If other applications occupy port 3000 and application use port 3001, this access blocked will occur.
could you please help to resolve with it? Thanks

@work.wilsonlyu Thanks for reporting.

This issue has been forwarded to our team and we will get with further updates.