Rest Api

Hi.

I downloaded and installed V 4.0.0 and navigated to the plugin page and couldnt find rest api on the list. Done a manual import and still no success. I decided to downgrade to 3.9.3 (last working one that i used) and the plugin was there. installed the rest api plugin again and navigated to the server > server settings to Rest API. i click on it and i get a blank page.

Any solution on how to fix this.

Thank

T