Legit Rcon crashes minecraft

Legit Rcon crashes Minecraft

What I expected to happen was...:
Command send to Minecraft server without issues.

What actually happened was...:
any command will randomly crash the server. (sometimes it will not crash)

Steps to Reproduce:
1. Enable Rcon
2. Start server
3. Send legit commands to the server via Rcon
4. Send legit commands to the server via Rcon
5. Send legit commands to the server via Rcon