We installed a minecraft server and watched tutorials of how to make one once we had made it we couldnt go on to it it would crash in a milisecond and we cant connect.

Put the summary of the bug you're having here

*What I expected to happen was...
Server is up and runnind but the client to add on more memory wouldnt open well it does for a milisecond.

What actually happened was...:
The client to add more memory closes in a milisecond

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
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