Blazor Authentication - Refresh Token for JWT token

I’ve based my authentication on this git hub repository.

https://github.com/chrissainty/AuthenticationWithClientSideBlazor

I’m just wondering if any one has any suggestions on how to implement a refresh token as currently everything I’ve tried has failed.

When does blazor recheck authentication because all I gather is it checks on load, so when my token expires whilst still logged in I get unauthorised http errors. I don’t want to log the user out to re-authenticate.

Any advise would be massively appreciated!