Integrate self-hosted Supabase to Softr

Hello! I have my database set up in a self-hosted Supabase instance. When I try and connect to it using the data source integration I am getting an error. When I inspect the console I am seeing this error:

Access to XMLHttpRequest at ‘https://datasource-api.softr.io/v1/postgresql/a8988814-91ec-484e-af21-edc0c881385a/register’ from origin ‘https://studio.softr.io’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

Has anyone successfully connected up a self-hosted Supabase instance to Softr and have any tips?