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java.lang.IllegalStateException: No server set.


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My Forge 1.16.5 server was working well for many months, that was until now.

I'm using a .bat file to run the server with 8G of memory and nothing seems out of the ordinary when the server is starting up. However, when the server's debug console appears I'm left with this:


[Server thread/ERROR] [minecraft/MinecraftServer]: java.lang.IllegalStateException: No server set.


Keep in mind that the server did not crash therefore there is no crash report. It gets close to running successfully however the Debug window is saying the tick speed is 0ms which isn't good.

Debug Log:

Server Debug Log 8/16/21 (github.com)

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If something else is running on port 25565 I'm not sure what it is because my server should be the only thing using that port. However, shutting down and restarting didn't work. 

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Yeah still had the same issue even after messing with port settings. Interestingly enough, created a new server and copied the data from the old one and we're back in business. So... I'm not entirely sure what happened, like I said this was whole thing was very random and I technically didn't fix it.



I created a new server exactly how you would any other forge server. After you've gotten your new server to run without mods, make sure to copy and paste your "world" and "mods" folders into your new server. You could also copy "server.properties" if you actually care to mess with server properties.


So there ya go... Solved?

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