Whenever I try to use Vics modern Warfare it crashes whenever I open my inventory.

Here is my crash log:
---- Minecraft Crash Report ----

WARNING: coremods are present:
weaponlib (mw-1.11.7.7_mc1.12.2.jar)
Contact their authors BEFORE contacting forge

// Sorry :(

Time: 10/9/19 9:13 PM
Description: Rendering item

java.lang.IllegalStateException: Not building!
at net.minecraft.client.renderer.BufferBuilder.func_178977_d(BufferBuilder.java:537)
at net.minecraft.client.renderer.Tessellator.func_78381_a(SourceFile:21)
at com.vicmatskiv.weaponlib.compatibility.CompatibleWeaponRenderer.func_188616_a(CompatibleWeaponRenderer.java:137)
at net.minecraftforge.client.ForgeHooksClient.renderLitItem(ForgeHooksClient.java:653)
at net.minecraft.client.renderer.RenderItem.func_191967_a(RenderItem.java:118)
at net.minecraft.client.renderer.RenderItem.func_191961_a(RenderItem.java:106)
at net.minecraft.client.renderer.RenderItem.func_180454_a(RenderItem.java:149)
at net.minecraft.client.renderer.RenderItem.func_191962_a(RenderItem.java:308)
at net.minecraft.client.renderer.RenderItem.func_184391_a(RenderItem.java:347)
at net.minecraft.client.renderer.RenderItem.func_180450_b(RenderItem.java:336)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_147051_a(GuiContainerCreative.java:922)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_146976_a(GuiContainerCreative.java:758)
at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:75)
at net.minecraft.client.renderer.InventoryEffectRenderer.func_73863_a(InventoryEffectRenderer.java:51)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_73863_a(GuiContainerCreative.java:643)
at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:396)
at net.minecraft.client.renderer.EntityRenderer.func_181560_a(EntityRenderer.java:1124)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1119)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:398)
at net.minecraft.client.main.Main.main(SourceFile:123)
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:497)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Client thread
Stacktrace:
at net.minecraft.client.renderer.BufferBuilder.func_178977_d(BufferBuilder.java:537)
at net.minecraft.client.renderer.Tessellator.func_78381_a(SourceFile:21)
at com.vicmatskiv.weaponlib.compatibility.CompatibleWeaponRenderer.func_188616_a(CompatibleWeaponRenderer.java:137)
at net.minecraftforge.client.ForgeHooksClient.renderLitItem(ForgeHooksClient.java:653)
at net.minecraft.client.renderer.RenderItem.func_191967_a(RenderItem.java:118)
at net.minecraft.client.renderer.RenderItem.func_191961_a(RenderItem.java:106)
at net.minecraft.client.renderer.RenderItem.func_180454_a(RenderItem.java:149)
at net.minecraft.client.renderer.RenderItem.func_191962_a(RenderItem.java:308)

-- Item being rendered --
Details:
Item Type: com.vicmatskiv.weaponlib.Weapon@6ffbae2e
Registry Name: mw:m16a4
Item Aux: 0
Item NBT: null
Item Foil: false
Stacktrace:
at net.minecraft.client.renderer.RenderItem.func_184391_a(RenderItem.java:347)
at net.minecraft.client.renderer.RenderItem.func_180450_b(RenderItem.java:336)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_147051_a(GuiContainerCreative.java:922)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_146976_a(GuiContainerCreative.java:758)
at net.minecraft.client.gui.inventory.GuiContainer.func_73863_a(GuiContainer.java:75)
at net.minecraft.client.renderer.InventoryEffectRenderer.func_73863_a(InventoryEffectRenderer.java:51)
at net.minecraft.client.gui.inventory.GuiContainerCreative.func_73863_a(GuiContainerCreative.java:643)
at net.minecraftforge.client.ForgeHooksClient.drawScreen(ForgeHooksClient.java:396)

-- Screen render details --
Details:
Screen name: net.minecraft.client.gui.inventory.GuiContainerCreative
Mouse location: Scaled: (301, 16). Absolute: (602, 447)
Screen size: Scaled: (427, 240). Absolute: (854, 480). Scale factor of 2

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityPlayerSP['colypoly12345'/463, l='MpServer', x=-429.42, y=74.42, z=985.00]]
Chunk stats: MultiplayerChunkCache: 625, 625
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (-252,64,240), Chunk: (at 4,4,0 in -16,15; contains blocks -256,0,240 to -241,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 58171 game time, 58171 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 127 total; [EntityPig['Pig'/536, l='MpServer', x=-500.84, y=70.00, z=908.45], EntityPig['Pig'/543, l='MpServer', x=-487.83, y=71.00, z=910.21], EntityCreeper['Creeper'/802, l='MpServer', x=-374.50, y=8.00, z=977.50], EntitySkeleton['Skeleton'/804, l='MpServer', x=-367.73, y=8.00, z=996.47], EntityMinecartChest['Minecart with Chest'/809, l='MpServer', x=-366.50, y=13.06, z=986.50], EntityBat['Bat'/810, l='MpServer', x=-362.88, y=14.10, z=981.53], EntityPig['Pig'/811, l='MpServer', x=-349.71, y=71.00, z=967.59], EntityPig['Pig'/556, l='MpServer', x=-488.23, y=70.00, z=970.34], EntitySpider['Spider'/812, l='MpServer', x=-362.50, y=28.00, z=1011.50], EntityPig['Pig'/557, l='MpServer', x=-492.31, y=70.00, z=973.58], EntityBat['Bat'/813, l='MpServer', x=-356.58, y=57.10, z=1011.50], EntityPig['Pig'/558, l='MpServer', x=-468.46, y=68.00, z=955.22], EntityPig['Pig'/559, l='MpServer', x=-469.50, y=68.00, z=950.50], EntityPig['Pig'/560, l='MpServer', x=-474.54, y=67.00, z=944.51], EntityPig['Pig'/561, l='MpServer', x=-462.39, y=67.00, z=941.77], EntityPig['Pig'/562, l='MpServer', x=-449.32, y=67.00, z=930.15], EntityPig['Pig'/563, l='MpServer', x=-488.24, y=70.00, z=976.90], EntityCreeper['Creeper'/819, l='MpServer', x=-354.50, y=29.00, z=1028.50], EntityPig['Pig'/564, l='MpServer', x=-495.66, y=69.00, z=987.28], EntitySkeleton['Skeleton'/820, l='MpServer', x=-362.30, y=20.00, z=1026.30], EntityChicken['Chicken'/565, l='MpServer', x=-471.85, y=69.00, z=970.51], EntityPig['Pig'/566, l='MpServer', x=-456.32, y=68.00, z=957.74], EntitySkeleton['Skeleton'/567, l='MpServer', x=-449.50, y=14.00, z=974.50], EntityPig['Pig'/568, l='MpServer', x=-453.23, y=69.00, z=973.50], EntityPig['Pig'/569, l='MpServer', x=-479.54, y=71.00, z=984.30], EntityChicken['Chicken'/570, l='MpServer', x=-488.29, y=68.00, z=1028.16], EntityBat['Bat'/571, l='MpServer', x=-489.66, y=12.81, z=1016.42], EntityChicken['Chicken'/572, l='MpServer', x=-459.52, y=70.00, z=973.70], EntityChicken['Chicken'/573, l='MpServer', x=-452.52, y=73.00, z=988.16], EntityItem['item.item.egg'/574, l='MpServer', x=-459.45, y=71.00, z=976.41], EntityChicken['Chicken'/575, l='MpServer', x=-453.09, y=73.00, z=986.52], EntityItem['item.item.egg'/576, l='MpServer', x=-479.21, y=68.00, z=1016.47], EntityCreeper['Creeper'/577, l='MpServer', x=-458.61, y=15.00, z=1005.82], EntitySpider['Spider'/578, l='MpServer', x=-451.57, y=21.00, z=993.83], EntityCreeper['Creeper'/579, l='MpServer', x=-452.23, y=21.00, z=992.52], EntityChicken['Chicken'/580, l='MpServer', x=-458.42, y=71.00, z=1001.16], EntityChicken['Chicken'/581, l='MpServer', x=-457.06, y=71.00, z=1004.93], EntityItem['item.item.egg'/582, l='MpServer', x=-458.67, y=72.00, z=992.25], EntityItem['item.item.egg'/583, l='MpServer', x=-457.67, y=71.00, z=1005.51], EntityChicken['Chicken'/584, l='MpServer', x=-480.21, y=68.00, z=1060.48], EntityChicken['Chicken'/587, l='MpServer', x=-473.44, y=66.00, z=1051.81], EntityChicken['Chicken'/588, l='MpServer', x=-472.44, y=66.00, z=1051.50], EntitySkeleton['Skeleton'/589, l='MpServer', x=-462.25, y=22.00, z=1039.46], EntityBat['Bat'/590, l='MpServer', x=-453.68, y=19.88, z=1035.20], EntityItem['item.item.egg'/591, l='MpServer', x=-453.51, y=72.00, z=1025.97], EntityChicken['Chicken'/592, l='MpServer', x=-454.26, y=72.00, z=1023.90], EntityItem['item.item.egg'/595, l='MpServer', x=-463.51, y=64.00, z=1046.88], EntityEnderman['Enderman'/603, l='MpServer', x=-464.62, y=55.00, z=908.62], EntityPig['Pig'/606, l='MpServer', x=-466.50, y=69.00, z=925.47], EntityPig['Pig'/607, l='MpServer', x=-476.56, y=71.00, z=916.25], EntityPig['Pig'/608, l='MpServer', x=-475.26, y=71.00, z=915.56], EntityEnderman['Enderman'/609, l='MpServer', x=-464.04, y=55.00, z=908.29], EntityPig['Pig'/610, l='MpServer', x=-463.81, y=72.00, z=911.70], EntityPig['Pig'/611, l='MpServer', x=-455.38, y=72.00, z=906.45], EntityPig['Pig'/612, l='MpServer', x=-460.27, y=72.00, z=909.64], EntityPig['Pig'/614, l='MpServer', x=-472.49, y=67.02, z=931.36], EntityZombie['Zombie'/615, l='MpServer', x=-448.20, y=43.00, z=925.51], EntityPig['Pig'/616, l='MpServer', x=-451.50, y=69.00, z=919.56], EntityPig['Pig'/617, l='MpServer', x=-451.49, y=66.00, z=925.31], EntityBat['Bat'/619, l='MpServer', x=-442.24, y=56.27, z=910.91], EntityPig['Pig'/620, l='MpServer', x=-434.28, y=72.00, z=907.58], EntityCreeper['Creeper'/632, l='MpServer', x=-411.50, y=24.00, z=1037.50], EntityCreeper['Creeper'/633, l='MpServer', x=-411.50, y=24.00, z=1032.78], EntityZombie['Zombie'/637, l='MpServer', x=-395.25, y=19.00, z=1025.49], EntityCreeper['Creeper'/638, l='MpServer', x=-399.15, y=19.00, z=1029.40], EntitySkeleton['Skeleton'/639, l='MpServer', x=-393.50, y=19.00, z=1025.50], EntityCustomMob10000['entity.bandit1.name'/640, l='MpServer', x=-391.98, y=19.00, z=1024.56], EntitySpider['Spider'/641, l='MpServer', x=-371.50, y=21.00, z=1017.50], EntityBat['Bat'/642, l='MpServer', x=-368.55, y=22.10, z=1015.75], EntityPig['Pig'/643, l='MpServer', x=-371.74, y=70.00, z=1022.64], EntityBat['Bat'/648, l='MpServer', x=-413.92, y=27.10, z=1064.36], EntityCreeper['Creeper'/652, l='MpServer', x=-396.50, y=13.00, z=1057.50], EntitySkeleton['Skeleton'/653, l='MpServer', x=-375.50, y=22.00, z=1054.50], EntitySkeleton['Skeleton'/654, l='MpServer', x=-379.50, y=22.00, z=1055.50], EntitySkeleton['Skeleton'/655, l='MpServer', x=-378.50, y=22.00, z=1055.50], EntitySquid['Squid'/656, l='MpServer', x=-382.66, y=48.00, z=1047.22], EntitySkeleton['Skeleton'/682, l='MpServer', x=-447.50, y=44.00, z=922.50], EntityPig['Pig'/683, l='MpServer', x=-439.24, y=71.00, z=919.61], EntitySpider['Spider'/685, l='MpServer', x=-428.50, y=36.00, z=907.50], EntityCreeper['Creeper'/687, l='MpServer', x=-427.50, y=36.00, z=907.50], EntityCreeper['Creeper'/688, l='MpServer', x=-427.50, y=36.00, z=908.50], EntityBat['Bat'/692, l='MpServer', x=-425.55, y=43.10, z=922.70], EntityPig['Pig'/693, l='MpServer', x=-440.31, y=67.00, z=936.56], EntityWitch['Witch'/696, l='MpServer', x=-443.81, y=31.00, z=953.51], EntityZombie['Zombie'/697, l='MpServer', x=-443.50, y=29.00, z=949.50], EntityZombie['Zombie'/698, l='MpServer', x=-437.67, y=25.00, z=951.77], EntityPig['Pig'/699, l='MpServer', x=-442.52, y=66.16, z=954.73], EntityPig['Pig'/700, l='MpServer', x=-408.70, y=74.00, z=925.78], EntityCreeper['Creeper'/701, l='MpServer', x=-378.57, y=34.00, z=906.16], EntitySpider['Spider'/705, l='MpServer', x=-444.50, y=22.00, z=973.50], EntityBat['Bat'/706, l='MpServer', x=-384.98, y=31.05, z=917.35], EntitySpider['Spider'/707, l='MpServer', x=-373.50, y=35.00, z=923.50], EntityCreeper['Creeper'/708, l='MpServer', x=-378.83, y=46.00, z=916.53], EntityItem['item.item.egg'/709, l='MpServer', x=-447.66, y=72.00, z=991.98], EntityPig['Pig'/710, l='MpServer', x=-434.50, y=71.00, z=980.72], EntitySkeleton['Skeleton'/711, l='MpServer', x=-445.08, y=22.00, z=1010.15], EntitySkeleton['Skeleton'/712, l='MpServer', x=-443.50, y=22.00, z=1009.50], EntityCreeper['Creeper'/713, l='MpServer', x=-396.50, y=23.00, z=954.50], EntitySkeleton['Skeleton'/714, l='MpServer', x=-376.50, y=32.00, z=937.50], EntitySpider['Spider'/715, l='MpServer', x=-362.66, y=42.00, z=926.73], EntityEnderman['Enderman'/717, l='MpServer', x=-440.50, y=21.00, z=1004.50], EntityCreeper['Creeper'/718, l='MpServer', x=-447.86, y=21.00, z=992.43], EntityPig['Pig'/719, l='MpServer', x=-402.74, y=71.00, z=975.32], EntityZombie['Zombie'/720, l='MpServer', x=-367.48, y=41.00, z=935.78], EntityZombie['Zombie'/721, l='MpServer', x=-355.25, y=39.00, z=942.50], EntitySkeleton['Skeleton'/722, l='MpServer', x=-358.50, y=40.00, z=937.50], EntitySpider['Spider'/724, l='MpServer', x=-406.85, y=29.00, z=985.64], EntityPlayerSP['colypoly12345'/463, l='MpServer', x=-429.42, y=74.42, z=985.00], EntityEnderman['Enderman'/726, l='MpServer', x=-428.50, y=22.00, z=1030.50], EntityPig['Pig'/727, l='MpServer', x=-416.22, y=70.00, z=1039.43], EntityEnderman['Enderman'/728, l='MpServer', x=-410.43, y=23.00, z=1010.68], EntityEnderman['Enderman'/729, l='MpServer', x=-412.50, y=23.00, z=1016.50], EntityZombie['Zombie'/730, l='MpServer', x=-406.50, y=23.00, z=1008.50], EntityZombie['Zombie'/731, l='MpServer', x=-408.50, y=23.00, z=1012.50], EntityZombie['Zombie'/732, l='MpServer', x=-411.33, y=58.00, z=1010.25], EntityCreeper['Creeper'/733, l='MpServer', x=-391.82, y=60.00, z=1002.52], EntityZombie['Zombie'/734, l='MpServer', x=-394.51, y=59.00, z=1001.78], EntityPig['Pig'/735, l='MpServer', x=-390.97, y=70.00, z=1004.45], EntitySheep['Sheep'/736, l='MpServer', x=-396.58, y=71.00, z=991.23], EntitySkeleton['Skeleton'/737, l='MpServer', x=-376.70, y=8.00, z=973.30], EntitySkeleton['Skeleton'/738, l='MpServer', x=-379.70, y=8.00, z=972.70], EntitySkeleton['Skeleton'/739, l='MpServer', x=-379.50, y=8.00, z=971.50], EntityBat['Bat'/995, l='MpServer', x=-400.35, y=8.34, z=984.54], EntityBat['Bat'/740, l='MpServer', x=-351.43, y=38.52, z=946.09], EntityWitch['Witch'/750, l='MpServer', x=-452.50, y=23.00, z=1008.50], EntityWitch['Witch'/751, l='MpServer', x=-452.50, y=23.00, z=1007.50], EntityCreeper['Creeper'/753, l='MpServer', x=-451.50, y=23.00, z=1012.50]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:420)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2741)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:419)
at net.minecraft.client.main.Main.main(SourceFile:123)
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:497)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.12.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 690220128 bytes (658 MB) / 1308622848 bytes (1248 MB) up to 2147483648 bytes (2048 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP 9.42 Powered by Forge 14.23.5.2847 5 mods loaded, 5 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

| State  | ID        | Version      | Source                        | Signature |
|:------ |:--------- |:------------ |:----------------------------- |:--------- |
| LCHIJA | minecraft | 1.12.2       | minecraft.jar                 | None      |
| LCHIJA | mcp       | 9.42         | minecraft.jar                 | None      |
| LCHIJA | FML       | 8.0.99.99    | forge-1.12.2-14.23.5.2847.jar | None      |
| LCHIJA | forge     | 14.23.5.2847 | forge-1.12.2-14.23.5.2847.jar | None      |
| LCHIJA | mw        | 1.11.7.7     | mw-1.11.7.7_mc1.12.2.jar      | None      |

Loaded coremods (and transformers): 

weaponlib (mw-1.11.7.7_mc1.12.2.jar)
com.vicmatskiv.weaponlib.core.WeaponlibClassTransformer
GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 399.24' Renderer: 'GeForce GTX 1060 6GB/PCIe/SSE2'
Launched Version: 1.12.2-forge1.12.2-14.23.5.2847
LWJGL: 2.9.4
OpenGL: GeForce GTX 1060 6GB/PCIe/SSE2 GL version 4.6.0 NVIDIA 399.24, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: 
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 6x Intel(R) Core(TM) i5-8600 CPU @ 3.10GHz

Version (make sure you are on the latest version before reporting):

Forge:
Vics Modern Warfare:
Other relevant version:

As we told you in #5666 this is not the correct place to report issues with Vics Modern Warefare, go report it on their discord https://discordapp.com/invite/XA7HBSF