Console:
[MCServerHost]: Checking server disk space usage, this could take a few seconds... [MCServerHost]: Updating process configuration files... [MCServerHost]: Ensuring file permissions are set correctly, this could take a few seconds... container@MCServerHost Server marked as starting... [MCServerHost]: Pulling Docker container image, this could take a few minutes to complete... [MCServerHost]: Finished pulling Docker container image container@MCServerHost~ java -version openjdk version "21.0.10" 2026-01-20 LTS OpenJDK Runtime Environment Temurin-21.0.10+7 (build 21.0.10+7-LTS) OpenJDK 64-Bit Server VM Temurin-21.0.10+7 (build 21.0.10+7-LTS, mixed mode, sharing) container@MCServerHost~ java -Xms512M -Xmx3072M -jar server.jar Error: LinkageError occurred while loading main class net.minecraft.bundler.Main java.lang.UnsupportedClassVersionError: net/minecraft/bundler/Main has been compiled by a more recent version of the Java Runtime (class file version 69.0), this version of the Java Runtime only recognizes class file versions up to 65.0 container@MCServerHost Server marked as offline. [MCServerHost]: ---------- Detected server process in a crashed state! ---------- [MCServerHost]: Exit code: 1 [MCServerHost]: Out of memory: false [MCServerHost]: Checking server disk space usage, this could take a few seconds... [MCServerHost]: Updating process configuration files... [MCServerHost]: Ensuring file permissions are set correctly, this could take a few seconds... container@MCServerHost Server marked as starting... [MCServerHost]: Pulling Docker container image, this could take a few minutes to complete... [MCServerHost]: Finished pulling Docker container image container@MCServerHost~ java -version openjdk version "21.0.10" 2026-01-20 LTS OpenJDK Runtime Environment Temurin-21.0.10+7 (build 21.0.10+7-LTS) OpenJDK 64-Bit Server VM Temurin-21.0.10+7 (build 21.0.10+7-LTS, mixed mode, sharing) container@MCServerHost~ java -Xms512M -Xmx3072M -jar server.jar Error: LinkageError occurred while loading main class net.minecraft.bundler.Main java.lang.UnsupportedClassVersionError: net/minecraft/bundler/Main has been compiled by a more recent version of the Java Runtime (class file version 69.0), this version of the Java Runtime only recognizes class file versions up to 65.0 container@MCServerHost Server marked as offline. [MCServerHost]: ---------- Detected server process in a crashed state! ---------- [MCServerHost]: Exit code: 1 [MCServerHost]: Out of memory: false [MCServerHost]: Aborting automatic restart, last crash occurred less than 60 seconds ago.