If I don't used express , can I use SSE? when I used

context.eventSource = new EventSource(`/`);

I have an error EventSource's response has a MIME type ("text/html") that is not "text/event-stream". Aborting the connection.

I don't know what eventSource url can I use. I guess .vue file can't be used for SSE

Can anyone help me? Really thanks.