Openfire stops forwarding messages, can't log in

Wersja: Openfire 4.8.3
Windows 2019 Standard.
Spark
Hi,

I use openfire and the spark client. The problem is that communication stops working, messages do not reach users, the service works but when trying to shut down it crashes. I’ve tried looking through the logs, but can’t capture why openfire stops working.
I ask for your support

I think you should try to collect/show more data, it will be hard for anyone to help you with a simple and also confusing “the service works but when trying to shutdown it crashes”. maybe try to explain the situation a little better.

I’m turning on the openfire service. Spark clients connect to the server. They can write to each other. After some indefinite period of time, the Spark client is still connected but no longer sending messages. If you haven’t logged in, you won’t log in now.
The log is unreadable to me, so I don’t want to show the whole thing.