Hi there, I'm here to report a crash (from what I've seen probably caused by player tick on multiplayer, affects single player as well, may be wrong), here's a crash report, bit sad was hoping to check you're new mod, love you're work btw, anyway here's the log :

Time: 2023-07-18 12:41:57
Description: Ticking entity

java.util.NoSuchElementException: No value present
at java.base/java.util.Optional.get(Optional.java:143)
at net.minecraft.class_3222.handler$zll001$simplyskills$tick(class_3222.java:5820)
at net.minecraft.class_3222.method_5773(class_3222.java)
at net.minecraft.class_3218.method_18762(class_3218.java:712)
at net.minecraft.class_1937.method_18472(class_1937.java:466)
at net.minecraft.class_3218.method_31420(class_3218.java:371)
at net.minecraft.class_5574.method_31791(class_5574.java:54)
at net.minecraft.class_3218.method_18765(class_3218.java:339)
at net.minecraft.server.MinecraftServer.method_3813(MinecraftServer.java:875)
at net.minecraft.server.MinecraftServer.method_3748(MinecraftServer.java:819)
at net.minecraft.class_1132.method_3748(class_1132.java:98)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:665)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:257)
at java.base/java.lang.Thread.run(Thread.java:833)

hope that can help you fix the problem, in case you need more detailed crash report don't hesitate to ask, good luck and have a wonderful day,
cheers. ❤️

Thank you for the report!

If you're able to send me the full crashlog that would be great! Also, did you have any passive abilities unlocked at the time?
At a glance it looks like I'm trying to retrieve a value that doesn't exist.

Ye no problem, and no it was freshly created world, purely to check out you're mod, here you go :

---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 2023-07-18 12:41:57
Description: Ticking entity

java.util.NoSuchElementException: No value present
at java.base/java.util.Optional.get(Optional.java:143)
at net.minecraft.class_3222.handler$zll001$simplyskills$tick(class_3222.java:5820)
at net.minecraft.class_3222.method_5773(class_3222.java)
at net.minecraft.class_3218.method_18762(class_3218.java:712)
at net.minecraft.class_1937.method_18472(class_1937.java:466)
at net.minecraft.class_3218.method_31420(class_3218.java:371)
at net.minecraft.class_5574.method_31791(class_5574.java:54)
at net.minecraft.class_3218.method_18765(class_3218.java:339)
at net.minecraft.server.MinecraftServer.method_3813(MinecraftServer.java:875)
at net.minecraft.server.MinecraftServer.method_3748(MinecraftServer.java:819)
at net.minecraft.class_1132.method_3748(class_1132.java:98)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:665)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:257)
at java.base/java.lang.Thread.run(Thread.java:833)

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

-- Head --
Thread: Server thread
Stacktrace:
at java.base/java.util.Optional.get(Optional.java:143)
at net.minecraft.class_3222.handler$zll001$simplyskills$tick(class_3222.java:5820)
at net.minecraft.class_3222.method_5773(class_3222.java)
at net.minecraft.class_3218.method_18762(class_3218.java:712)
at net.minecraft.class_1937.method_18472(class_1937.java:466)
at net.minecraft.class_3218.method_31420(class_3218.java:371)
at net.minecraft.class_5574.method_31791(class_5574.java:54)
at net.minecraft.class_3218.method_18765(class_3218.java:339)

-- Entity being ticked --
Details:
Entity Type: minecraft:player (net.minecraft.class_3222)
Entity ID: 250
Entity Name: VanCock
Entity's Exact location: 198.50, 70.00, -6.50
Entity's Block location: World: (198,70,-7), Section: (at 6,6,9 in 12,4,-1; chunk contains blocks 192,-64,-16 to 207,319,-1), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,-64,-512 to 511,319,-1)
Entity's Momentum: 0.00, 0.00, 0.00
Entity's Passengers: []
Entity's Vehicle: null
Stacktrace:
at net.minecraft.class_1937.method_18472(class_1937.java:466)
at net.minecraft.class_3218.method_31420(class_3218.java:371)
at net.minecraft.class_5574.method_31791(class_5574.java:54)
at net.minecraft.class_3218.method_18765(class_3218.java:339)
at net.minecraft.server.MinecraftServer.method_3813(MinecraftServer.java:875)
at net.minecraft.server.MinecraftServer.method_3748(MinecraftServer.java:819)
at net.minecraft.class_1132.method_3748(class_1132.java:98)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:665)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:257)
at java.base/java.lang.Thread.run(Thread.java:833)

-- Affected level --
Details:
All players: 1 total; [class_3222['VanCock'/250, l='ServerLevel[New World]', x=198.50, y=70.00, z=-6.50]]
Chunk stats: 2209
Level dimension: minecraft:overworld
Level spawn location: World: (208,72,0), Section: (at 0,8,0 in 13,4,0; chunk contains blocks 208,-64,0 to 223,319,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,-64,0 to 511,319,511)
Level time: 14 game time, 14 day time
Level name: New World
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Level weather: Rain time: 88354 (now: false), thunder time: 118236 (now: false)
Known server brands: fabric
Level was modded: true
Level storage version: 0x04ABD - Anvil
Stacktrace:
at net.minecraft.server.MinecraftServer.method_3813(MinecraftServer.java:875)
at net.minecraft.server.MinecraftServer.method_3748(MinecraftServer.java:819)
at net.minecraft.class_1132.method_3748(class_1132.java:98)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:665)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:257)
at java.base/java.lang.Thread.run(Thread.java:833)

-- System Details --
Details:
Minecraft Version: 1.19.2
Minecraft Version ID: 1.19.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 17.0.3, Microsoft
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
Memory: 698813576 bytes (666 MiB) / 2080374784 bytes (1984 MiB) up to 2147483648 bytes (2048 MiB)
CPUs: 12
Processor Vendor: AuthenticAMD
Processor Name: AMD Ryzen 5 5600G with Radeon Graphics
Identifier: AuthenticAMD Family 25 Model 80 Stepping 0
Microarchitecture: Zen 3
Frequency (GHz): 3.90
Number of physical packages: 1
Number of physical CPUs: 6
Number of logical CPUs: 12
Graphics card #0 name: NVIDIA GeForce GTX 1650
Graphics card #0 vendor: NVIDIA (0x10de)
Graphics card #0 VRAM (MB): 4095.00
Graphics card #0 deviceId: 0x1f82
Graphics card #0 versionInfo: DriverVersion=31.0.15.3179
Graphics card #1 name: AMD Radeon(TM) Graphics
Graphics card #1 vendor: Advanced Micro Devices, Inc. (0x1002)
Graphics card #1 VRAM (MB): 0.00
Graphics card #1 deviceId: 0x1638
Graphics card #1 versionInfo: DriverVersion=31.0.12027.9001
Memory slot #0 capacity (MB): 16384.00
Memory slot #0 clockSpeed (GHz): 2.40
Memory slot #0 type: DDR4
Virtual memory max (MB): 18212.00
Virtual memory used (MB): 13376.29
Swap memory total (MB): 2432.00
Swap memory used (MB): 4.62
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
Fabric Mods:
bendy-lib: Bendy api 2.1.1
cloth-config: Cloth Config v8 8.3.103
cloth-basic-math: cloth-basic-math 0.6.1
fabric-api: Fabric API 0.76.0+1.19.2
fabric-api-base: Fabric API Base 0.4.15+8f4e8eb390
fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.6.14+93d8cb8290
fabric-biome-api-v1: Fabric Biome API (v1) 9.1.1+16f1e31390
fabric-block-api-v1: Fabric Block API (v1) 1.0.2+e415d50e90
fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.25+cafc6e8e90
fabric-client-tags-api-v1: Fabric Client Tags 1.0.5+b35fea8390
fabric-command-api-v1: Fabric Command API (v1) 1.2.16+f71b366f90
fabric-command-api-v2: Fabric Command API (v2) 2.2.1+413cbbc790
fabric-commands-v0: Fabric Commands (v0) 0.2.33+df3654b390
fabric-containers-v0: Fabric Containers (v0) 0.1.41+df3654b390
fabric-content-registries-v0: Fabric Content Registries (v0) 3.5.2+7c6cd14d90
fabric-convention-tags-v1: Fabric Convention Tags 1.3.0+4bc6e26290
fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.2.8+aeb40ebe90
fabric-data-generation-api-v1: Fabric Data Generation API (v1) 5.3.8+413cbbc790
fabric-dimensions-v1: Fabric Dimensions API (v1) 2.1.35+0d0f210290
fabric-entity-events-v1: Fabric Entity Events (v1) 1.5.4+9244241690
fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.4.34+562bff6e90
fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.36+df3654b390
fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.24+b6b6abb490
fabric-item-api-v1: Fabric Item API (v1) 1.6.6+b7d1888890
fabric-item-groups-v0: Fabric Item Groups (v0) 0.3.39+9244241690
fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.25+5c4fce2890
fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.23+df3654b390
fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 2.2.4+1b46dc7890
fabric-loot-api-v2: Fabric Loot API (v2) 1.1.13+83a8659290
fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.1.16+9e7660c690
fabric-message-api-v1: Fabric Message API (v1) 5.0.7+93d8cb8290
fabric-mining-level-api-v1: Fabric Mining Level API (v1) 2.1.24+33fbc73890
fabric-models-v0: Fabric Models (v0) 0.3.21+c6af733c90
fabric-networking-api-v1: Fabric Networking API (v1) 1.2.11+10eb22f490
fabric-networking-v0: Fabric Networking (v0) 0.3.28+df3654b390
fabric-object-builder-api-v1: Fabric Object Builder API (v1) 4.2.2+d8ef690890
fabric-particles-v1: Fabric Particles (v1) 1.0.14+4d0d570390
fabric-recipe-api-v1: Fabric Recipe API (v1) 1.0.1+413cbbc790
fabric-registry-sync-v0: Fabric Registry Sync (v0) 0.9.32+9244241690
fabric-renderer-api-v1: Fabric Renderer API (v1) 1.2.1+1adbf27790
fabric-renderer-indigo: Fabric Renderer - Indigo 0.8.0+1adbf27790
fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 3.2.24+df3654b390
fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.3.19+6e0787e690
fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 3.0.11+4d0d570390
fabric-rendering-v0: Fabric Rendering (v0) 1.1.27+df3654b390
fabric-rendering-v1: Fabric Rendering (v1) 1.12.1+d8ef690890
fabric-resource-conditions-api-v1: Fabric Resource Conditions API (v1) 2.1.2+aae9039d90
fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.8.4+edbdcddb90
fabric-screen-api-v1: Fabric Screen API (v1) 1.0.32+4d0d570390
fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.3.7+1cc24b1b90
fabric-sound-api-v1: Fabric Sound API (v1) 1.0.2+c4f28df590
fabric-textures-v0: Fabric Textures (v0) 1.0.24+aeb40ebe90
fabric-transfer-api-v1: Fabric Transfer API (v1) 2.1.6+413cbbc790
fabric-transitive-access-wideners-v1: Fabric Transitive Access Wideners (v1) 1.3.3+08b73de490
fabricloader: Fabric Loader 0.14.21
java: OpenJDK 64-Bit Server VM 17
minecraft: Minecraft 1.19.2
player-animator: Player Animator 1.0.2
puffish_skills: Pufferfish's Skills 0.4.0
simplyskills: Simply Skills BETA 0.04
spell_engine: Spell Engine 0.9.24+1.19
com_github_llamalad7_mixinextras: MixinExtras 0.1.1
spell_power: Spell Power Attribute 0.9.12+1.19
trinkets: Trinkets 3.4.2
cardinal-components-base: Cardinal Components API (base) 5.0.0-beta.1
cardinal-components-entity: Cardinal Components API (entities) 5.0.0-beta.1
Server Running: true
Player Count: 1 / 8; [class_3222['VanCock'/250, l='ServerLevel[New World]', x=198.50, y=70.00, z=-6.50]]
Data Packs: vanilla, Fabric Mods
World Generation: Experimental
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fabric'; Server brand changed to 'fabric'
Launched Version: fabric-loader-0.14.21-1.19.2

Thank you!
Could you try deleting the Puffish Skills config folder on both client & server and rebooting to see if the crash still occurs?

It did work, well it opens world, but I will test it to see if there may be other issues, just in case, thanks. ^^

Awesome! Glad to hear it
I'm certain you'll run into more bugs, but hopefully no hard crashes like that one 🙂
Any and all reports of bugs/crashes are very welcome if you do experience them.