Make trying to run a animation that doesn't exist not crash the game

[ZigyTheBird]

Here is a what happens when I try to run an animation that doesn't exist:

**Logs**

java.lang.IllegalArgumentException: Animation can not be null at dev.kosmx.playerAnim.api.layered.KeyframeAnimationPlayer.(KeyframeAnimationPlayer.java:78) ~[7619843248939383443.jar:?] at dev.kosmx.playerAnim.api.layered.KeyframeAnimationPlayer.(KeyframeAnimationPlayer.java:99) ~[7619843248939383443.jar:?] at dev.kosmx.playerAnim.api.layered.KeyframeAnimationPlayer.(KeyframeAnimationPlayer.java:103) ~[7619843248939383443.jar:?] at net.minecraft.world.item.Item.handler$zno000$playeranimator$playAnimation(Item.java:2035) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.world.item.Item.use(Item.java) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.world.item.ItemStack.use(ItemStack.java:364) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.client.multiplayer.MultiPlayerGameMode.method_41929(MultiPlayerGameMode.java:355) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.client.multiplayer.MultiPlayerGameMode.startPrediction(MultiPlayerGameMode.java:254) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.client.multiplayer.MultiPlayerGameMode.useItem(MultiPlayerGameMode.java:348) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.client.Minecraft.startUseItem(Minecraft.java:1715) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.client.Minecraft.handleKeybinds(Minecraft.java:1965) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.client.Minecraft.tick(Minecraft.java:1784) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.client.Minecraft.runTick(Minecraft.java:1134) ~[minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.client.Minecraft.run(Minecraft.java:791) [minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.minecraft.client.main.Main.main(Main.java:227) [minecraft-merged-519c7931cd-1.21-loom.mappings.1_21.layered+hash.40359-v2.jar:?] at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:470) [fabric-loader-0.15.11.jar:?] at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) [fabric-loader-0.15.11.jar:?] at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) [fabric-loader-0.15.11.jar:?] at net.fabricmc.devlaunchinjector.Main.main(Main.java:86) [dev-launch-injector-0.2.1+build.8.jar:?] at dev.architectury.transformer.TransformerRuntime.main(TransformerRuntime.java:220) [architectury-transformer-5.2.87-runtime.jar:5.2.87]

IIRC this didn't happen on previous version and in my opinion the game literally crashing in the middle of playtesting because of the dev misspelling an animation name or smth like that is inconvinient
Just make it like before where it threw an error but maybe instead of "Animation can not be null" you could have it throw an easier to understand error for less knowledgable modders like "Could not find animation" or "Animation does not exist"