1.8.8 Minecraft server won't run in Debian Linux

I'll make this simple.

I run small Minecraft servers on my Raspberry Pi 3B+, and it suffices for very small stuff, but I wanted more power. I grabbed an old Windows laptop that was picking up dust, wiped it, and installed Debian Linux. I copied over the Spigot server folder from my RPi into my laptop, and installed "identical" Java versions.

Running the server on the Pi has always worked flawlessly; however, when I transferred the files to my Debian, and ran them with Java, something strange happened. The server does claim to start, but when I ping the server in any way (By clicking the Refresh button on the servers page), the console SHOWERS ME in exceptions. They are all the exact same exception, but it spams it for a solid 2 or 3 minutes until I do Ctrl+C to make it stop.

I believe it's also worth mentioning that the server logs this to the console when ran on the laptop

INFO: Your platform does not provide complete low-level API for accessing direct buffers reliably. Unless explicitly requested, heap buffer will always be preferred to avoid potential system unstability.

I believed it may be an issue with Spigot, but it is not. I manually downloaded the vanilla 1.8.9 server.jar, and ran that alone, to no changes in results.

What could be going on here?

(The laptop in question is a Toshiba Satellite P875-S7200 running Debian 4.19.132-1 [2020-07-24] )