java -Xms256m -Xmx512m -jar /root/server/forge-1.14.4-28.1.71-installer.jar
JVM info: Oracle Corporation - 1.8.0_231 - 25.231-b11
java.net.preferIPv4Stack=true
Found java version 1.8.0_231
Exception in thread "main"
java.awt.AWTError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
That installer is not working properly!
java -Xms256m -Xmx512m -jar forge-1.14.4-28.1.71-universal.jar nogui
no main manifest attribute, in forge-1.14.4-28.1.71-universal.jar
The OS is centOS7.