ServerSentEvent return value can't parse by frontend

[lbsx]

---

name: "🐛 Bug Report"
about: "If something isn't working as expected."
title: ''

Describe the bug
yield ServerSentEvent({"content": res}) # data split by "\r\n",
frontend parse wrong. Because the front-end requires \n\n
how I let ServerSentEvent return "\r\n" replace "\n\n"