[17:05:06] [main/ERROR] [FML]: Exception loading model for variant planetcore:mantlerock7_mantlerock#inventory for item "minecraft:air", normal location exception:
net.minecraftforge.client.model.ModelLoaderRegistry$LoaderException: Exception loading model planetcore:item/mantlerock7_mantlerock with loader VanillaLoader.INSTANCE, skipping
    at net.minecraftforge.client.model.ModelLoaderRegistry.getModel(ModelLoaderRegistry.java:161) ~[ModelLoaderRegistry.class:?]
    at net.minecraftforge.client.model.ModelLoader.loadItemModels(ModelLoader.java:302) ~[ModelLoader.class:?]
    at net.minecraft.client.renderer.block.model.ModelBakery.loadVariantItemModels(ModelBakery.java:175) ~[ModelBakery.class:?]
    at net.minecraftforge.client.model.ModelLoader.setupModelRegistry(ModelLoader.java:151) ~[ModelLoader.class:?]
    at net.minecraft.client.renderer.block.model.ModelManager.onResourceManagerReload(ModelManager.java:28) [ModelManager.class:?]
    at net.minecraft.client.resources.SimpleReloadableResourceManager.registerReloadListener(SimpleReloadableResourceManager.java:132) [SimpleReloadableResourceManager.class:?]
    at net.minecraft.client.Minecraft.init(Minecraft.java:559) [Minecraft.class:?]
    at net.minecraft.client.Minecraft.run(Minecraft.java:421) [Minecraft.class:?]
    at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_231]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_231]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_231]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_231]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_231]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_231]
    at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
    at GradleStart.main(GradleStart.java:25) [start/:?]
Caused by: java.io.FileNotFoundException: planetcore:models/item/mantlerock7_mantlerock.json
    at net.minecraft.client.resources.FallbackResourceManager.getResource(FallbackResourceManager.java:73) ~[FallbackResourceManager.class:?]
    at net.minecraft.client.resources.SimpleReloadableResourceManager.getResource(SimpleReloadableResourceManager.java:65) ~[SimpleReloadableResourceManager.class:?]
    at net.minecraft.client.renderer.block.model.ModelBakery.loadModel(ModelBakery.java:334) ~[ModelBakery.class:?]
    at net.minecraftforge.client.model.ModelLoader.access$1400(ModelLoader.java:115) ~[ModelLoader.class:?]
    at net.minecraftforge.client.model.ModelLoader$VanillaLoader.loadModel(ModelLoader.java:861) ~[ModelLoader$VanillaLoader.class:?]
    at net.minecraftforge.client.model.ModelLoaderRegistry.getModel(ModelLoaderRegistry.java:157) ~[ModelLoaderRegistry.class:?]
    ... 20 more
[17:05:06] [main/ERROR] [FML]: Exception loading model for variant planetcore:mantlerock7_mantlerock#inventory for item "minecraft:air", blockstate location exception:
net.minecraftforge.client.model.ModelLoaderRegistry$LoaderException: Exception loading model planetcore:mantlerock7_mantlerock#inventory with loader VariantLoader.INSTANCE, skipping
    at net.minecraftforge.client.model.ModelLoaderRegistry.getModel(ModelLoaderRegistry.java:161) ~[ModelLoaderRegistry.class:?]
    at net.minecraftforge.client.model.ModelLoader.loadItemModels(ModelLoader.java:296) ~[ModelLoader.class:?]
    at net.minecraft.client.renderer.block.model.ModelBakery.loadVariantItemModels(ModelBakery.java:175) ~[ModelBakery.class:?]
    at net.minecraftforge.client.model.ModelLoader.setupModelRegistry(ModelLoader.java:151) ~[ModelLoader.class:?]
    at net.minecraft.client.renderer.block.model.ModelManager.onResourceManagerReload(ModelManager.java:28) [ModelManager.class:?]
    at net.minecraft.client.resources.SimpleReloadableResourceManager.registerReloadListener(SimpleReloadableResourceManager.java:132) [SimpleReloadableResourceManager.class:?]
    at net.minecraft.client.Minecraft.init(Minecraft.java:559) [Minecraft.class:?]
    at net.minecraft.client.Minecraft.run(Minecraft.java:421) [Minecraft.class:?]
    at net.minecraft.client.main.Main.main(Main.java:118) [Main.class:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_231]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_231]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_231]
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_231]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_231]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_231]
    at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97) [start/:?]
    at GradleStart.main(GradleStart.java:25) [start/:?]
Caused by: net.minecraft.client.renderer.block.model.ModelBlockDefinition$MissingVariantException
    at net.minecraft.client.renderer.block.model.ModelBlockDefinition.getVariant(ModelBlockDefinition.java:83) ~[ModelBlockDefinition.class:?]
    at net.minecraftforge.client.model.ModelLoader$VariantLoader.loadModel(ModelLoader.java:1175) ~[ModelLoader$VariantLoader.class:?]
    at net.minecraftforge.client.model.ModelLoaderRegistry.getModel(ModelLoaderRegistry.java:157) ~[ModelLoaderRegistry.class:?]
    ... 20 more