I find this error when provided PDF data URL inside instance.loadDocument() function
Access to fetch at ‘http://127.0.0.1:9614/204’ (redirected from ‘https ://firebasestorage.googleapis.com/v0/b/pdf-sign-react-cf85f.appspot.com/o/docToSign%2FCeQvMWQ1Sme7n7T9RlELokITemC31648624488036.pdf’) from origin ‘http://localhost:3000’ has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource. If an opaque response serves your needs, set the request’s mode to ‘no-cors’ to fetch the resource with CORS disabled.