command /test [<text>]:
	trigger:
		send player title "&7Event" with subtitle "&6Oczekiwanie na graczy... &3-" for 8 tick
		wait 10 tick
		send player title "&7Event" with subtitle "&6Oczekiwanie na graczy... &3\" for 8 tick
		wait 10 tick
		send player title "&7Event" with subtitle "&6Oczekiwanie na graczy... &3|" for 8 tick
		wait 10 tick
		send player title "&7Event" with subtitle "&6Oczekiwanie na graczy... &3/" for 8 tick```

Log:

[00:10:04 INFO]: Gorlik [cb0651f1-50c5-3c62-9e83-c79b549f5092]: /test
[00:10:04 ERROR]: #!#!
[00:10:04 ERROR]: #!#! [Skript] Severe Error:
[00:10:04 ERROR]: #!#!
[00:10:04 ERROR]: #!#! Something went horribly wrong with Skript.
[00:10:04 ERROR]: #!#! This issue is NOT your fault! You probably can't fix it yourself, either.
[00:10:04 ERROR]: #!#! It looks like you are using some plugin(s) that alter how Skript works (addons).
[00:10:04 ERROR]: #!#! Here is full list of them:
[00:10:04 ERROR]: #!#! skRayFall (http://sk.rayfall.net/) Skellett (https://forums.skunity.com/resources/skellett-the-addon-with-a-beast-name.24/) SkQuery Umbaska
[00:10:04 ERROR]: #!#! We could not identify which of those are specially related, so this might also be Skript issue.
[00:10:04 ERROR]: #!#! You should try disabling those plugins one by one, trying to find which one causes it.
[00:10:04 ERROR]: #!#! If the error doesn't disappear even after disabling all listed plugins, it is probably Skript issue.
[00:10:04 ERROR]: #!#! In that case, you will be given instruction on how should you report it.
[00:10:04 ERROR]: #!#! On the other hand, if the error disappears when disabling some plugin, report it to author of that plugin.
[00:10:04 ERROR]: #!#! Only if the author tells you to do so, report it as Skript issue (url below)
[00:10:04 ERROR]: #!#! Issue tracker: https://github.com/bensku/Skript/issues (only if you know what you're doing!)
[00:10:04 ERROR]: #!#!
[00:10:04 ERROR]: #!#! Stack trace:
[00:10:04 ERROR]: #!#! com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Unterminated string at line 1 column 43
[00:10:04 ERROR]: #!#!     at com.google.gson.internal.Streams.parse(Streams.java:56)
[00:10:04 ERROR]: #!#!     at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:54)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.ChatDeserializer.a(SourceFile:501)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.ChatDeserializer.a(SourceFile:512)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.IChatBaseComponent$ChatSerializer.a(SourceFile:205)
[00:10:04 ERROR]: #!#!     at net.rayfall.eyesniper2.skrayfall.v1_10.EffTitleV1_10.execute(EffTitleV1_10.java:80)
[00:10:04 ERROR]: #!#!     at ch.njol.skript.lang.Effect.run(Effect.java:52)
[00:10:04 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:61)
[00:10:04 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:89)
[00:10:04 ERROR]: #!#!     at ch.njol.skript.effects.Delay$1.run(Delay.java:101)
[00:10:04 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftTask.run(CraftTask.java:71)
[00:10:04 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:723)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:400)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:668)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:567)
[00:10:04 ERROR]: #!#!     at java.lang.Thread.run(Unknown Source)
[00:10:04 ERROR]: #!#! Caused by: com.google.gson.stream.MalformedJsonException: Unterminated string at line 1 column 43
[00:10:04 ERROR]: #!#!     at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1505)
[00:10:04 ERROR]: #!#!     at com.google.gson.stream.JsonReader.nextQuotedValue(JsonReader.java:1006)
[00:10:04 ERROR]: #!#!     at com.google.gson.stream.JsonReader.nextString(JsonReader.java:811)
[00:10:04 ERROR]: #!#!     at com.google.gson.internal.bind.TypeAdapters$25.read(TypeAdapters.java:646)
[00:10:04 ERROR]: #!#!     at com.google.gson.internal.bind.TypeAdapters$25.read(TypeAdapters.java:667)
[00:10:04 ERROR]: #!#!     at com.google.gson.internal.bind.TypeAdapters$25.read(TypeAdapters.java:642)
[00:10:04 ERROR]: #!#!     at com.google.gson.internal.Streams.parse(Streams.java:44)
[00:10:04 ERROR]: #!#!     at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:54)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.ChatDeserializer.a(SourceFile:501)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.ChatDeserializer.a(SourceFile:512)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.IChatBaseComponent$ChatSerializer.a(SourceFile:205)
[00:10:04 ERROR]: #!#!     at net.rayfall.eyesniper2.skrayfall.v1_10.EffTitleV1_10.execute(EffTitleV1_10.java:80)
[00:10:04 ERROR]: #!#!     at ch.njol.skript.lang.Effect.run(Effect.java:52)
[00:10:04 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:61)
[00:10:04 ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:89)
[00:10:04 ERROR]: #!#!     at ch.njol.skript.effects.Delay$1.run(Delay.java:101)
[00:10:04 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftTask.run(CraftTask.java:71)
[00:10:04 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_10_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:723)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:400)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:668)
[00:10:04 ERROR]: #!#!     at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:567)
[00:10:04 ERROR]: #!#!     at java.lang.Thread.run(Unknown Source)
[00:10:04 ERROR]: #!#!
[00:10:04 ERROR]: #!#! Version Information:
[00:10:04 ERROR]: #!#!   Skript: 2.2-dev32d (latest)
[00:10:04 ERROR]: #!#!   Bukkit: 1.10.2-R0.1-SNAPSHOT
[00:10:04 ERROR]: #!#!   Minecraft: 1.10.2
[00:10:04 ERROR]: #!#!   Java: 1.8.0_161 (Java HotSpot(TM) 64-Bit Server VM 25.161-b12)
[00:10:04 ERROR]: #!#!   OS: Windows 10 amd64 10.0
[00:10:04 ERROR]: #!#!
[00:10:04 ERROR]: #!#! Running CraftBukkit: false
[00:10:04 ERROR]: #!#! Running Spigot (or compatible): true
[00:10:04 ERROR]: #!#! Running Paper (or compatible): false
[00:10:04 ERROR]: #!#!
[00:10:04 ERROR]: #!#! Current node: null
[00:10:04 ERROR]: #!#! Current item: null
[00:10:04 ERROR]: #!#! Thread: Server thread
[00:10:04 ERROR]: #!#!
[00:10:04 ERROR]: #!#! Language: english
[00:10:04 ERROR]: #!#! Link parse mode: DISABLED
[00:10:04 ERROR]: #!#!
[00:10:04 ERROR]: #!#! End of Error.
[00:10:04 ERROR]: #!#!