Access to XMLHttpRequest at 'https://identitytoolkit.googleapis.com/v1/accounts:/signUp? from origin 'http://localhost:8080' has been blocked

Question

Access to XMLHttpRequest at \'https://identitytoolkit.googleapis.com/v1/accounts:/signUp?key=AIzaSyDvZN5PKdB_b9jX-5rA-t9e3KSxJ-qtkdU\' from origin \'http://localhost:8080\'