SurvivalPlus Lightsabers (lightsaber) encountered an error during the sided_setup event phase
java.util.ConcurrentModificationException: null how to fix?
Please provide more information. Is this forge or fabric? What version of minecraft is this? Also, attach a copy of the crash report and/or the latest log.
SurvivalPlus Lightsabers (lightsaber) encountered an error during the sided_setup event phase java.util.ConcurrentModificationException: null how to fix?