Unable to create a customer and log in to one.

Hello, I have installed the shopware**  5.1.6 along with the demo data**.

Whenever I am trying to create the customer, it does not create it or let me sign in by the customer that I have already created in backend.

However, when I create a customer from frontend and click on save it, the URL gets changed like this:

http://localhost/Shopware/shopware-5.1.6/checkout/shippingPayment

Although, it does not redirect to that URL instead it just reload the current page.

I tried this in the different browser to check this issue is not related to a browser.

Please look into this. 

Thanks.