texture doesn't appear when testing out the mod

[BjornSteinar]

[11:44:36] [main/INFO] (FabricLoader/GameProvider) Loading Minecraft 1.18.1 with Fabric Loader 0.12.12
[11:44:36] [main/INFO] (FabricLoader) Loading 52 mods:
- ancient ${version}
- fabric 0.46.2+1.18
- fabric-api-base 0.4.1+b4f4f6cd3a
- fabric-api-lookup-api-v1 1.5.1+17be577f3a
- fabric-biome-api-v1 6.0.1+ded849a93a
- fabric-blockrenderlayer-v1 1.1.9+3ac43d953a
- fabric-command-api-v1 1.1.6+3ac43d953a
- fabric-commands-v0 0.2.5+b4f4f6cd3a
- fabric-containers-v0 0.1.18+d154e2c63a
- fabric-content-registries-v0 0.4.6+6f53a73d3a
- fabric-crash-report-info-v1 0.1.8+3ac43d953a
- fabric-data-generation-api-v1 1.1.2+125404533a
- fabric-dimensions-v1 2.1.9+a1d9bbf53a
- fabric-entity-events-v1 1.4.5+6b21378a3a
- fabric-events-interaction-v0 0.4.16+bfa23f173a
- fabric-events-lifecycle-v0 0.2.7+b4f4f6cd3a
- fabric-game-rule-api-v1 1.0.10+3ac43d953a
- fabric-gametest-api-v1 1.0.8+e66b59e93a
- fabric-item-api-v1 1.3.0+691a79b53a
- fabric-item-groups-v0 0.3.4+3ac43d953a
- fabric-key-binding-api-v1 1.0.8+c8aba2f33a
- fabric-keybindings-v0 0.2.6+b4f4f6cd3a
- fabric-lifecycle-events-v1 1.4.11+e66b59e93a
- fabric-loot-tables-v1 1.0.8+3ac43d953a
- fabric-mining-level-api-v1 1.0.4+3ac43d953a
- fabric-mining-levels-v0 0.1.9+b4f4f6cd3a
- fabric-models-v0 0.3.3+3ac43d953a
- fabric-networking-api-v1 1.0.18+3ac43d953a
- fabric-networking-v0 0.3.5+b4f4f6cd3a
- fabric-object-builder-api-v1 1.11.2+3b82842e3a
- fabric-object-builders-v0 0.7.10+3ac43d953a
- fabric-particles-v1 0.2.9+526dc1ac3a
- fabric-registry-sync-v0 0.9.0+befed49e3a
- fabric-renderer-api-v1 0.4.10+b0b66fc33a
- fabric-renderer-indigo 0.4.13+b0b66fc33a
- fabric-renderer-registries-v1 3.2.8+b4f4f6cd3a
- fabric-rendering-data-attachment-v1 0.3.4+7242e9d73a
- fabric-rendering-fluids-v1 0.1.18+3ac43d953a
- fabric-rendering-v0 1.1.10+b4f4f6cd3a
- fabric-rendering-v1 1.10.4+e66b59e93a
- fabric-resource-conditions-api-v1 1.0.1+13eda0653a
- fabric-resource-loader-v0 0.4.12+e66b59e93a
- fabric-screen-api-v1 1.0.7+3ac43d953a
- fabric-screen-handler-api-v1 1.1.11+3ac43d953a
- fabric-structure-api-v1 2.1.1+0a73a6c23a
- fabric-tag-extensions-v0 1.2.6+3ac43d953a
- fabric-textures-v0 1.0.9+3ac43d953a
- fabric-tool-attribute-api-v1 1.3.6+fb3b57b43a
- fabric-transfer-api-v1 1.5.7+b4f4f6cd3a
- fabricloader 0.12.12
- java 17
- minecraft 1.18.1
[11:44:36] [main/WARN] (FabricLoader/Metadata) Mod ancient (${version}) does not respect SemVer - comparison support is limited.
[11:44:37] [main/INFO] (FabricLoader/Mixin) SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/C:/Users/Lenovo/.gradle/caches/modules-2/files-2.1/net.fabricmc/sponge-mixin/0.10.7+mixin.0.8.4/7a4ca9d54d9ae564dea0363d668036a8420ed9b8/sponge-mixin-0.10.7+mixin.0.8.4.jar Service=Knot/Fabric Env=CLIENT
[11:44:37] [main/INFO] (FabricLoader/Mixin) Loaded Fabric development mappings for mixin remapper!
[11:44:37] [main/INFO] (FabricLoader/Mixin) Compatibility level set to JAVA_16
[11:44:37] [main/INFO] (FabricLoader/Mixin) Compatibility level set to JAVA_17
[11:44:42] [main/WARN] (FabricLoader/Mixin) @Inject(@at("INVOKE")) Shift.BY=3 on fabric-lifecycle-events-v1.mixins.json:client.WorldChunkMixin::handler$zzm000$onLoadBlockEntity exceeds the maximum allowed value: 0. Increase the value of maxShiftBy to suppress this warning.
[11:44:44] [Render thread/INFO] (Minecraft) Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[11:44:45] [Render thread/ERROR] (Minecraft) Failed to verify authentication
com.mojang.authlib.exceptions.InvalidCredentialsException: Status: 401
at com.mojang.authlib.exceptions.MinecraftClientHttpException.toAuthenticationException(MinecraftClientHttpException.java:56) ~[authlib-3.2.38.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilUserApiService.fetchProperties(YggdrasilUserApiService.java:132) ~[authlib-3.2.38.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilUserApiService.(YggdrasilUserApiService.java:44) ~[authlib-3.2.38.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.createUserApiService(YggdrasilAuthenticationService.java:153) ~[authlib-3.2.38.jar:?]
at net.minecraft.client.MinecraftClient.createUserApiService(MinecraftClient.java:664) [minecraft-project-@-merged-named.jar:?]
at net.minecraft.client.MinecraftClient.(MinecraftClient.java:496) [minecraft-project-@-merged-named.jar:?]
at net.minecraft.client.main.Main.main(Main.java:178) [minecraft-project-@-merged-named.jar:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?]
at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:608) [fabric-loader-0.12.12.jar:?]
at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:77) [fabric-loader-0.12.12.jar:?]
at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) [fabric-loader-0.12.12.jar:?]
at net.fabricmc.devlaunchinjector.Main.main(Main.java:86) [dev-launch-injector-0.2.1+build.8.jar:?]
Caused by: com.mojang.authlib.exceptions.MinecraftClientHttpException: Status: 401
at com.mojang.authlib.minecraft.client.MinecraftClient.readInputStream(MinecraftClient.java:78) ~[authlib-3.2.38.jar:?]
at com.mojang.authlib.minecraft.client.MinecraftClient.get(MinecraftClient.java:48) ~[authlib-3.2.38.jar:?]
at com.mojang.authlib.yggdrasil.YggdrasilUserApiService.fetchProperties(YggdrasilUserApiService.java:113) ~[authlib-3.2.38.jar:?]
... 13 more
[11:44:45] [Render thread/INFO] (Minecraft) Setting user: Player988
[11:44:45] [Render thread/INFO] (Indigo) [Indigo] Registering Indigo renderer!
[11:44:46] [Render thread/INFO] (Minecraft) Backend library: LWJGL version 3.2.2 build 10
[11:44:50] [Render thread/INFO] (Minecraft) Narrator library for x64 successfully loaded
[11:44:50] [Render thread/INFO] (Minecraft) Reloading ResourceManager: Default, Fabric Mods (Fabric Resource Conditions API (v1), Fabric Crash Report Info (v1), Fabric Lifecycle Events (v1), Fabric Renderer API (v1), Fabric Transfer API (v1), Fabric Tool Attribute API (v1), Fabric Rendering Fluids (v1), Fabric Game Rule API (v1), Fabric Key Binding API (v1), Fabric Key Bindings (v0), Fabric Rendering (v0), Fabric Data Generation API (v1), Fabric Mining Level API (v1), Fabric Mining Levels (v0), Fabric API, Fabric Rendering Data Attachment (v1), Fabric Object Builder API (v1), Fabric Item API (v1), Fabric Networking API (v1), Fabric Commands (v0), Fabric Loot Tables (v1), Fabric Dimensions API (v1), Fabric Loader, Fabric Command API (v1), Fabric Renderer Registries (v1), Fabric Game Test API (v1), Fabric Item Groups (v0), Fabric Resource Loader (v0), Fabric Structure API (v1), Fabric Biome API (v1), Fabric Models (v0), Fabric Containers (v0), Fabric Particles (v1), Egger Steinar Vignisson, Fabric Tag Extensions (v0), Fabric Content Registries (v0), Fabric API Lookup API (v1), Fabric Object Builders (v0), Fabric Screen API (v1), Fabric Renderer - Indigo, Fabric BlockRenderLayer Registration (v1), Fabric Registry Sync (v0), Fabric Screen Handler API (v1), Fabric API Base, Fabric Entity Events (v1), Fabric Events Interaction (v0), Fabric Events Lifecycle (v0), Fabric Textures (v0), Fabric Rendering (v1), Fabric Networking (v0))
[11:44:50] [Render thread/INFO] (ancient) This line is printed by an example mod mixin!
[11:44:51] [Realms Notification Availability checker #1/INFO] (Minecraft) Could not authorize you against Realms server: Invalid session id
[11:44:52] [Worker-Main-21/WARN] (Minecraft) Unable to load model: 'eggertsteinarvignisson:skinny_jeans#inventory' referenced from: eggertsteinarvignisson:skinny_jeans#inventory: java.io.FileNotFoundException: eggertsteinarvignisson:models/item/skinny_jeans.json
[11:44:53] [Render thread/INFO] (Minecraft) OpenAL initialized on device OpenAL Soft on Speakers (Realtek High Definition Audio)
[11:44:53] [Render thread/INFO] (Minecraft) Sound engine started
[11:44:53] [Render thread/INFO] (Minecraft) Created: 1024x1024x4 minecraft:textures/atlas/blocks.png-atlas
[11:44:53] [Render thread/INFO] (Minecraft) Created: 256x128x4 minecraft:textures/atlas/signs.png-atlas
[11:44:53] [Render thread/INFO] (Minecraft) Created: 1024x512x4 minecraft:textures/atlas/banner_patterns.png-atlas
[11:44:53] [Render thread/INFO] (Minecraft) Created: 1024x512x4 minecraft:textures/atlas/shield_patterns.png-atlas
[11:44:53] [Render thread/INFO] (Minecraft) Created: 256x256x4 minecraft:textures/atlas/chest.png-atlas
[11:44:53] [Render thread/INFO] (Minecraft) Created: 512x256x4 minecraft:textures/atlas/beds.png-atlas
[11:44:53] [Render thread/INFO] (Minecraft) Created: 512x256x4 minecraft:textures/atlas/shulker_boxes.png-atlas
[11:44:55] [Render thread/INFO] (Minecraft) Created: 256x256x0 minecraft:textures/atlas/particles.png-atlas
[11:44:55] [Render thread/INFO] (Minecraft) Created: 256x256x0 minecraft:textures/atlas/paintings.png-atlas
[11:44:55] [Render thread/INFO] (Minecraft) Created: 256x128x0 minecraft:textures/atlas/mob_effects.png-atlas
[11:44:55] [Render thread/INFO] (ancient) This line is printed by an example mod mixin!
[11:45:08] [Render thread/INFO] (ancient) This line is printed by an example mod mixin!
[11:45:15] [Render thread/WARN] (Minecraft) Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[11:45:15] [Render thread/WARN] (Minecraft) Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[11:45:15] [Render thread/WARN] (Minecraft) Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[11:45:15] [Render thread/WARN] (Minecraft) Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[11:45:15] [Render thread/WARN] (Minecraft) Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[11:45:15] [Render thread/INFO] (Minecraft) Reloading ResourceManager: Default, Fabric Mods (Fabric Tool Attribute API (v1), Fabric Game Test API (v1))
[11:45:15] [Render thread/INFO] (Minecraft) Loaded 7 recipes
[11:45:15] [Render thread/INFO] (Minecraft) Loaded 1141 advancements
[11:45:15] [Render thread/INFO] (BiomeModificationImpl) Applied 0 biome modifications to 0 of 61 new biomes in 2.003 ms
[11:45:16] [Render thread/INFO] (Minecraft) Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[11:45:16] [Server thread/INFO] (Minecraft) Starting integrated minecraft server version 1.18.1
[11:45:16] [Server thread/INFO] (Minecraft) Generating keypair
[11:45:17] [Server thread/INFO] (Minecraft) Preparing start region for dimension minecraft:overworld
[11:45:17] [Render thread/INFO] (Minecraft) Preparing spawn area: 0%
[11:45:17] [Render thread/INFO] (Minecraft) Preparing spawn area: 0%
[11:45:18] [Render thread/INFO] (Minecraft) Preparing spawn area: 0%
[11:45:18] [Render thread/INFO] (Minecraft) Preparing spawn area: 0%
[11:45:21] [Render thread/INFO] (Minecraft) Preparing spawn area: 0%
[11:45:21] [Render thread/INFO] (Minecraft) Preparing spawn area: 0%
[11:45:21] [Render thread/INFO] (Minecraft) Preparing spawn area: 0%
[11:45:21] [Render thread/INFO] (Minecraft) Preparing spawn area: 0%
[11:45:21] [Render thread/INFO] (Minecraft) Preparing spawn area: 0%
[11:45:21] [Render thread/INFO] (Minecraft) Preparing spawn area: 15%
[11:45:22] [Render thread/INFO] (Minecraft) Preparing spawn area: 31%
[11:45:22] [Render thread/INFO] (Minecraft) Preparing spawn area: 32%
[11:45:23] [Render thread/INFO] (Minecraft) Preparing spawn area: 42%
[11:45:23] [Render thread/INFO] (Minecraft) Preparing spawn area: 60%
[11:45:24] [Render thread/INFO] (Minecraft) Preparing spawn area: 83%
[11:45:24] [Render thread/INFO] (Minecraft) Preparing spawn area: 99%
[11:45:24] [Render thread/INFO] (Minecraft) Time elapsed: 7571 ms
[11:45:24] [Server thread/INFO] (Minecraft) Changing view distance to 12, from 10
[11:45:24] [Server thread/INFO] (Minecraft) Changing simulation distance to 12, from 0
[11:45:25] [Server thread/INFO] (Minecraft) Player988[local:E:fbe3d3c1] logged in with entity id 195 at (66.66984022515639, 85.8681355206574, -86.73742968835862)
[11:45:25] [Server thread/INFO] (Minecraft) Player988 joined the game
[11:45:25] [Render thread/INFO] (Minecraft) Loaded 0 advancements
[11:46:13] [Render thread/INFO] (Minecraft) Loaded 3 advancements
[11:46:35] [Render thread/INFO] (Minecraft) Stopping!
[11:46:35] [Server thread/INFO] (Minecraft) Player988 lost connection: Disconnected
[11:46:35] [Server thread/INFO] (Minecraft) Player988 left the game
[11:46:35] [Server thread/INFO] (Minecraft) Stopping singleplayer server as player logged out
[11:46:35] [Server thread/INFO] (Minecraft) Stopping server
[11:46:35] [Server thread/INFO] (Minecraft) Saving players
[11:46:35] [Server thread/INFO] (Minecraft) Saving worlds
[11:46:35] [Server thread/INFO] (Minecraft) Saving chunks for level 'ServerLevel[TestWorld]'/minecraft:overworld
[11:46:36] [Server thread/INFO] (Minecraft) Saving chunks for level 'ServerLevel[TestWorld]'/minecraft:the_nether
[11:46:36] [Server thread/INFO] (Minecraft) Saving chunks for level 'ServerLevel[TestWorld]'/minecraft:the_end
[11:46:36] [Server thread/INFO] (Minecraft) ThreadedAnvilChunkStorage (TestWorld): All chunks are saved
[11:46:36] [Server thread/INFO] (Minecraft) ThreadedAnvilChunkStorage (DIM-1): All chunks are saved
[11:46:36] [Server thread/INFO] (Minecraft) ThreadedAnvilChunkStorage (DIM1): All chunks are saved
[11:46:36] [Server thread/INFO] (Minecraft) ThreadedAnvilChunkStorage: All dimensions are saved

This seems to be the problem but i have no idea on how to fix it
[11:44:52] [Worker-Main-21/WARN] (Minecraft) Unable to load model: 'eggertsteinarvignisson:skinny_jeans#inventory' referenced from: eggertsteinarvignisson:skinny_jeans#inventory: java.io.FileNotFoundException: eggertsteinarvignisson:models/item/skinny_jeans.json

[warjort]

See the part about adding models/textures here:
https://fabricmc.net/wiki/tutorial:items

For "official" docs on MC assets:
https://minecraft.fandom.com/wiki/Resource_Pack