const INITIAL_HEAP_SIZE = 1024; Save and relaunch. This is the manual for memory crashes. 5. Fixing Multiplayer: Setting Up a Stable 1.20.1 Server Public servers often have high ping or broken plugins. Here is the fix for running your own lag-free Eaglercraft 1.20.1 server:
Java 17+ and a spare PC or VPS.
Extract the ZIP. You will see Eaglercraft1.20.1.html and a compiled folder. eaglercraft 120 1 fix
java -jar EaglercraftServer.jar --port 8081 Then connect to ws://localhost:8081 . Symptom: You spawn in a void, or only a 3×3 square of blocks loads, everything else is invisible. const INITIAL_HEAP_SIZE = 1024; Save and relaunch
Download the official Eaglercraft1.20.1_offline.zip from the trusted repository (find the latest release on GitHub from lazydog01 or ayunami2000 – always check file hashes). const INITIAL_HEAP_SIZE = 1024