You are trying to use the Barclay CORS Proxy without including the ?url= parameter or specifying a URL in the parameter. These are crucial aspects of the proxy and must be included if you wish to use the service in your applications and/or websites.
Make sure you follow this example:
https://barclaycors.ourjupitergroup.workers.dev/?url=https://example.com
URLs like these will not work.
https://barclaycors.ourjupitergroup.workers.dev/
https://barclaycors.ourjupitergroup.workers.dev/?url=
If you did follow good example and are still getting an error, please email us immediately at barclaywebtech@gmail.com with more details. We will try to get back to you with a fix as soon as we figure out the issue.