Redirect if not subscribed

Hello everyone,
I am using stripe donation plugins Stripe Donations Plugin. I want to do in such a way that if i didn’t donate and want to navigate any page so it should forcefully redirect to /donate page. But is showing error like “Refused to apply style from http://localhost:3000/donate/ because its MIME type (‘text/html’) is not a supported stylesheet MIME type, and strict MIME checking is enabled.”. Can anyone help?

Thanks in Advance.