Java server error log

Quote from Ash_lee

I am trying to set up a LAN server for java version but get this error whenever I try to run!

This error occurs if a Java version newer than Java 8 is installed. According to the log, Java 18 is installed, but the game (and server) only supports Java 8

Installing Java 8 should to the trick in this case

AshWardle same problem I had. you need to alter your win_startscript.bat file to start the server like this

"c:\Program Files\java\jre1.8.0_341\bin\java.exe" -Xmx%mem%m -jar server.jar

replace the java directory address with your path and version. I am guessing you are using yahgiggle's installer otherwise you will need to remove the JDK18 to make it work.