The Starbound Fatal Exception Caught: (UniverseServerException) is a persisting error many players have encountered in the game. However, most have failed to troubleshoot or find the cause of this issue.
As with any launch error, our technical team has endeavored to find workarounds to this issue. Read on to learn them in detail in this guide!
Fix #1: Do Not Host and Play in Single Player Mode at the Same Time
One of the major reasons players run into this error is because they host and play in single-player mode simultaneously.
This doesn’t seem right and should not be. It overloads the game, thus making you run into the error. Therefore, ensure you run these two options independently.

Fix #2: Run the Game as Admin
Another way to avoid this error or Starbound crashes upon joining the server is to run the game as an administrator. This affords you the privilege of having all the read and rights, which will tremendously help against issues relating to crashes.
If you have already run into this error, close the game and open it again. To run the game as an admin, right-click on the game file and select run as administrator.
It would also be advantageous for you to run your game in admin mode in order to obtain some free in-game items that other players usually receive only if they play on Starbound servers with free items.
Fix #3: Reinstall the Game
If the above methods do not resolve the issue, you might need to uninstall and reinstall the game. There is a possibility that your game files are corrupt, causing you to encounter this error. You can do this from the control panel [1].
Fix #4: Disable Third Party Programs
You can also solve all error-related problems by disabling all third-party programs that may interfere with the game like antiviruses. You can do this from the control panel menu option. Choose programs and features, then right-click on the programs you would love to deactivate.

Conclusion
The Fatal Exception Caught: (UniverseServerException) error on Starbound can be caused by several reasons. This includes corrupt game files, hosting and playing the game in single-player mode, etc. However, for whatever reason you may run into this problem, all the fixes we have shared in this guide are working and dependable you can count on them.