1.15.2 scoreboard error

[MaroCSB]

i'm not good at English.

It's my server's log.

I checked the other files.
I think the Skrayfall issue is right.

I need you to check.
20:19:37 ERROR: #!#! at net.rayfall.eyesniper2.skrayfall.scoreboard.EffSetScore.execute(EffSetScore.java:65)

20:19:37 ERROR: #!#! [Skript] Severe Error:
20:19:37 ERROR: #!#!
20:19:37 ERROR: #!#! Something went horribly wrong with Skript.
20:19:37 ERROR: #!#! This issue is NOT your fault! You probably can't fix it yourself, either.
20:19:37 ERROR: #!#! It looks like you are using some plugin(s) that alter how Skript works (addons).
20:19:37 ERROR: #!#! Here is full list of them:
20:19:37 ERROR: #!#! skRayFall v1.9.25 (https://sk.rayfall.net/) MarSK v3.1.1 InvSK v0 GomSK v0.1 skUtilities v0.9.2 (https://tim740.github.io/) SkQuery v4.1.5 Skellett v1.9.11 (https://forums.skunity.com/resources/skellett.24/) SharpSK v1.6.3 SkChoke v1.1
20:19:37 ERROR: #!#! We could not identify which of those are specially related, so this might also be Skript issue.
20:19:37 ERROR: #!#! You should try disabling those plugins one by one, trying to find which one causes it.
20:19:37 ERROR: #!#! If the error doesn't disappear even after disabling all listed plugins, it is probably Skript issue.
20:19:37 ERROR: #!#! In that case, you will be given instruction on how should you report it.
20:19:37 ERROR: #!#! On the other hand, if the error disappears when disabling some plugin, report it to author of that plugin.
20:19:37 ERROR: #!#! Only if the author tells you to do so, report it to Skript's issue tracker.
20:19:37 ERROR: #!#!
20:19:37 ERROR: #!#! Stack trace:
20:19:37 ERROR: #!#! java.lang.NullPointerException
20:19:37 ERROR: #!#! at net.rayfall.eyesniper2.skrayfall.scoreboard.EffSetScore.execute(EffSetScore.java:65)
20:19:37 ERROR: #!#! at ch.njol.skript.lang.Effect.run(Effect.java:51)
20:19:37 ERROR: #!#! at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:60)
20:19:37 ERROR: #!#! at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:88)
20:19:37 ERROR: #!#! at ch.njol.skript.lang.Trigger.execute(Trigger.java:56)
20:19:37 ERROR: #!#! at ch.njol.skript.events.EvtPeriodical.execute(EvtPeriodical.java:94)
20:19:37 ERROR: #!#! at ch.njol.skript.events.EvtPeriodical$1.run(EvtPeriodical.java:108)
20:19:37 ERROR: #!#! at org.bukkit.craftbukkit.v1_15_R1.scheduler.CraftTask.run(CraftTask.java:81)
20:19:37 ERROR: #!#! at org.bukkit.craftbukkit.v1_15_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:394)
20:19:37 ERROR: #!#! at net.minecraft.server.v1_15_R1.MinecraftServer.b(MinecraftServer.java:1036)
20:19:37 ERROR: #!#! at net.minecraft.server.v1_15_R1.DedicatedServer.b(DedicatedServer.java:399)
20:19:37 ERROR: #!#! at net.minecraft.server.v1_15_R1.MinecraftServer.a(MinecraftServer.java:984)
20:19:37 ERROR: #!#! at net.minecraft.server.v1_15_R1.MinecraftServer.run(MinecraftServer.java:824)
20:19:37 ERROR: #!#! at java.lang.Thread.run(Unknown Source)
20:19:37 ERROR: #!#!
20:19:37 ERROR: #!#! Version Information:
20:19:37 ERROR: #!#! Skript: 2.6-alpha1 (custom version)
20:19:37 ERROR: #!#! Flavor: selfbuilt-unknown
20:19:37 ERROR: #!#! Date: unknown
20:19:37 ERROR: #!#! Bukkit: 1.15.2-R0.1-SNAPSHOT
20:19:37 ERROR: #!#! Minecraft: 1.15.2
20:19:37 ERROR: #!#! Java: 1.8.0_291 (Java HotSpot(TM) 64-Bit Server VM 25.291-b10)
20:19:37 ERROR: #!#! OS: Windows 10 amd64 10.0
20:19:37 ERROR: #!#!
20:19:37 ERROR: #!#! Server platform: Spigot
20:19:37 ERROR: #!#!
20:19:37 ERROR: #!#! Current node: null
20:19:37 ERROR: #!#! Current item: null
20:19:37 ERROR: #!#! Current trigger: every 1 second (every 1 second) (rank.sk, line 1)
20:19:37 ERROR: #!#!
20:19:37 ERROR: #!#! Thread: Server thread
20:19:37 ERROR: #!#!
20:19:37 ERROR: #!#! Language: english
20:19:37 ERROR: #!#! Link parse mode: DISABLED
20:19:37 ERROR: #!#!
20:19:37 ERROR: #!#! End of Error.
20:19:37 ERROR: #!#!