could you show some code

I discovered that when you try to send en email from a server side page, it gives you this error.
It only works in client-side for me.
So the code that I put inside the page is like this:

emailjs.
send(
  serviceID, 
  templateID, 
  params:{}, 
  publicKEY).
  then((result) => console.log(result.text); )

Since its a client side component, thats the reason you are getting the error

never used emailjs so I'm not sure but the error should be caused by trying to use browser location api on the server

are you using @emailjs/browser? try @emailjs/nodejs instead