What is the error "Error occurred when calling nuxtServerInit: Client network socket disconnected before secure TLS connection was established"?

Question

JavaScript

Hello. Actually, I would like to know what the error can be connected with (code under the spoiler).
"Suddenly out of nowhere," is called.
What is used - nginx, nodejs, nuxtjs For half a year of work, this happens for the first time, and in general I have never seen such before. Search engines are also not particularly rich in answers to this topic.
Maybe someone met?
P.s. other sites "nearby" work fine. So it's something with nuxt? I tried to reinstall, update the node - nothing.

spoiler

Error occurred when calling nuxtServerInit: Client network socket disconnected before secure TLS connection was established
You have triggered an unhandledRejection, you may have forgotten to catch a Promise rejection:
Error: Client network socket disconnected before secure TLS connection w as established
at connResetException (internal/errors.js:575:14)
at TLSSocket.onConnectEnd (_tls_wrap.js:1361:19)
at Object.onceWrapper (events.js:299:28)
at TLSSocket.emit (events.js:215:7)
at TLSSocket.EventEmitter.emit (domain.js:478:20)
at endReadableNT (_stream_readable.js:1198:12)
at processTicksAndRejections (internal/process/task_queues.js:80:21)