Here's the mc error at startup on Forge 13.20.0.2222:

[11:51:09] [Client thread/ERROR] [jei]: Failed to get tooltip: 1xitem.waystones:warp_stone@0 waystones:warp_stone
java.lang.NullPointerException
at net.blay09.mods.waystones.PlayerWaystoneHelper.getWaystonesTag(PlayerWaystoneHelper.java:19) ~[PlayerWaystoneHelper.class:?]
at net.blay09.mods.waystones.PlayerWaystoneHelper.getLastWarpStoneUse(PlayerWaystoneHelper.java:63) ~[PlayerWaystoneHelper.class:?]
at net.blay09.mods.waystones.item.ItemWarpStone.func_77624_a(ItemWarpStone.java:90) ~[ItemWarpStone.class:?]
at net.minecraft.item.ItemStack.func_82840_a(ItemStack.java:605) ~[afj.class:?]
at mezz.jei.plugins.vanilla.ingredients.ItemStackRenderer.getTooltip(ItemStackRenderer.java:42) [ItemStackRenderer.class:?]
at mezz.jei.plugins.vanilla.ingredients.ItemStackRenderer.getTooltip(ItemStackRenderer.java:20) [ItemStackRenderer.class:?]
at mezz.jei.IngredientInformation.getTooltipString(IngredientInformation.java:29) [IngredientInformation.class:?]
at mezz.jei.util.IngredientListElement.(IngredientListElement.java:54) [IngredientListElement.class:?]
at mezz.jei.util.IngredientListElement.create(IngredientListElement.java:32) [IngredientListElement.class:?]
at mezz.jei.IngredientBaseListFactory.addToBaseList(IngredientBaseListFactory.java:55) [IngredientBaseListFactory.class:?]
at mezz.jei.IngredientBaseListFactory.create(IngredientBaseListFactory.java:38) [IngredientBaseListFactory.class:?]
at mezz.jei.ItemFilterInternals.(ItemFilterInternals.java:33) [ItemFilterInternals.class:?]
at mezz.jei.ItemFilter.(ItemFilter.java:11) [ItemFilter.class:?]
at mezz.jei.JeiStarter.start(JeiStarter.java:53) [JeiStarter.class:?]
at mezz.jei.ProxyCommonClient.loadComplete(ProxyCommonClient.java:115) [ProxyCommonClient.class:?]
at mezz.jei.JustEnoughItems.loadComplete(JustEnoughItems.java:53) [JustEnoughItems.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:641) [FMLModContainer.class:?]
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:246) [LoadController.class:?]
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:224) [LoadController.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) [guava-17.0.jar:?]
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) [guava-17.0.jar:?]
at com.google.common.eventbus.EventBus.post(EventBus.java:275) [guava-17.0.jar:?]
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:147) [LoadController.class:?]
at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:817) [Loader.class:?]
at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:343) [FMLClientHandler.class:?]
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:521) [bes.class:?]
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:352) [bes.class:?]
at net.minecraft.client.main.Main.main(SourceFile:124) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_25]
at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_25]
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:?]