Guardian Beam effect does not work on last dev build with paper1.20.1, throw errors:
[23:53:17 WARN]: [GuardianBeam] [GuardianBeam] Loaded not matching version of the mappings for your server version (1.20.1) [23:53:17 INFO]: [GuardianBeam] [GuardianBeam] Loaded mappings V1_19 [23:53:17 WARN]: java.lang.NullPointerException [23:53:17 WARN]: at java.base/java.util.Objects.requireNonNull(Objects.java:208) [23:53:17 WARN]: at java.base/java.lang.invoke.DirectMethodHandle.checkBase(DirectMethodHandle.java:538) [23:53:17 WARN]: at java.base/jdk.internal.reflect.MethodHandleFloatFieldAccessorImpl.getFloat(MethodHandleFloatFieldAccessorImpl.java:87) [23:53:17 WARN]: at java.base/jdk.internal.reflect.MethodHandleFloatFieldAccessorImpl.get(MethodHandleFloatFieldAccessorImpl.java:55) [23:53:17 WARN]: at java.base/java.lang.reflect.Field.get(Field.java:428) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.bukkit.utils.particles.Laser$Packets.getField(Laser.java:1002) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.bukkit.utils.particles.Laser$Packets.(Laser.java:741) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.bukkit.utils.particles.Laser.(Laser.java:56) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.bukkit.utils.particles.Laser$GuardianLaser.(Laser.java:307) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.mechanics.GuardianBeamEffect$Animator.start(GuardianBeamEffect.java:121) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.mechanics.GuardianBeamEffect$Animator.(GuardianBeamEffect.java:101) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.mechanics.GuardianBeamEffect.castAtEntity(GuardianBeamEffect.java:78) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.SkillMechanic.lambda$executeTargetedEntitySkill$8(SkillMechanic.java:556) [23:53:17 WARN]: at java.base/java.util.ArrayList.forEach(ArrayList.java:1511) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.SkillMechanic.executeTargetedEntitySkill(SkillMechanic.java:552) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.SkillMechanic.lambda$executeSkills$4(SkillMechanic.java:508) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.SkillMechanic.runMechanic(SkillMechanic.java:547) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.SkillMechanic.executeSkills(SkillMechanic.java:508) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.SkillMechanic.execute(SkillMechanic.java:425) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.MetaSkill.execute(MetaSkill.java:294) [23:53:17 WARN]: at MythicMobs-5.3.3-SNAPSHOT.jar//io.lumine.mythic.core.skills.AbstractSkill$DelayedSkill.run(AbstractSkill.java:459) [23:53:17 WARN]: at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftTask.run(CraftTask.java:101) [23:53:17 WARN]: at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:480) [23:53:17 WARN]: at net.minecraft.server.MinecraftServer.b(MinecraftServer.java:1480) [23:53:17 WARN]: at net.minecraft.server.dedicated.DedicatedServer.b(DedicatedServer.java:447) [23:53:17 WARN]: at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:1394) [23:53:17 WARN]: at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:1171) [23:53:17 WARN]: at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:318) [23:53:17 WARN]: at java.base/java.lang.Thread.run(Thread.java:833) [23:53:17 ERROR]: [GuardianBeam] [GuardianBeam] Laser Beam reflection failed to initialize. The util is disabled. Please ensure your version (org.bukkit.craftbukkit.v1_20_R1) is supported. [23:53:17 WARN]: [MythicMobs] Task #146336 for MythicMobs v5.3.3-SNAPSHOT-133f207f generated an exception java.lang.IllegalStateException: The Laser Beam API is disabled. An error has occured during initialization. at io.lumine.mythic.bukkit.utils.particles.Laser.(Laser.java:56) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.bukkit.utils.particles.Laser$GuardianLaser.(Laser.java:307) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.mechanics.GuardianBeamEffect$Animator.start(GuardianBeamEffect.java:121) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.mechanics.GuardianBeamEffect$Animator.(GuardianBeamEffect.java:101) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.mechanics.GuardianBeamEffect.castAtEntity(GuardianBeamEffect.java:78) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.SkillMechanic.lambda$executeTargetedEntitySkill$8(SkillMechanic.java:556) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at java.util.ArrayList.forEach(ArrayList.java:1511) ~[?:?] at io.lumine.mythic.core.skills.SkillMechanic.executeTargetedEntitySkill(SkillMechanic.java:552) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.SkillMechanic.lambda$executeSkills$4(SkillMechanic.java:508) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.SkillMechanic.runMechanic(SkillMechanic.java:547) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.SkillMechanic.executeSkills(SkillMechanic.java:508) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.SkillMechanic.execute(SkillMechanic.java:425) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.MetaSkill.execute(MetaSkill.java:294) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at io.lumine.mythic.core.skills.AbstractSkill$DelayedSkill.run(AbstractSkill.java:459) ~[MythicMobs-5.3.3-SNAPSHOT.jar:?] at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftTask.run(CraftTask.java:101) ~[paper-1.20.1.jar:git-Paper-54] at org.bukkit.craftbukkit.v1_20_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:480) ~[paper-1.20.1.jar:git-Paper-54] at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1480) ~[paper-1.20.1.jar:git-Paper-54] at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:447) ~[paper-1.20.1.jar:git-Paper-54] at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1394) ~[paper-1.20.1.jar:git-Paper-54] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1171) ~[paper-1.20.1.jar:git-Paper-54] at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:318) ~[paper-1.20.1.jar:git-Paper-54] at java.lang.Thread.run(Thread.java:833) ~[?:?]