Describe the bug
Mod crashes on startup on Linux (using X11)

To Reproduce
Steps to reproduce the behavior:

1. Launch the game with ITLT installed, on Linux using X11
2. Observe crash

Expected behavior
No crash

Environment details
Please fill in what you know, skip any parts you don't know.

• Operating system (e.g. Windows 10): Ubuntu 18.04
• Java (e.g. AdoptOpenJDK 8 HotSpot):

openjdk version "1.8.0_292"
OpenJDK Runtime Environment (build 1.8.0_292-8u292-b10-0ubuntu1~18.04-b10)
OpenJDK 64-Bit Server VM (build 25.292-b10, mixed mode)

• Mod version (e.g. 1.16.5-2.0.0): 1.16.x-2.0.0
• Minecraft version (e.g. 1.16.5): 1.16.5

Logs and additional context
https://paste.ee/p/DFQQ0

This issue was first reported to the modpack here and they said it was caused by ITLT

Hello, thanks for your report.

There have been some improvements to handling the window icon in v2.0.1, please may you retest and see if the issue persists?

If still no luck, would you be willing to try upgrading your Ubuntu version to the latest LTS release (20.04 at the time of writing)?

Closing as unable to reproduce. If you come across the same issue again on the latest mod version, feel free to write a comment here and I'll re-open.