Describe the bug

While playing on the server, the game client crashed with the following crash report.

java.lang.ArrayIndexOutOfBoundsException: 6
at com.hbm.items.armor.ArmorGasMask.renderHelmetOverlay(ArmorGasMask.java:115)
at net.minecraftforge.client.GuiIngameForge.renderHelmet(GuiIngameForge.java:253)
at net.minecraftforge.client.GuiIngameForge.func_73830_a(GuiIngameForge.java:117)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1420)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1001)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

https://hastebin.com/esimatucaq.yaml

Mod version: 1.0.27 BETA (3997)
Forge version: 10.13.4.1614

Fixed in the newest version.