also, is this compatable with optifabric? (not installed but just wondering)
this happened when i was opening a new world i created a couple minutes ago with the same mods.

---- Minecraft Crash Report ----
// My bad.

Time: 5/19/21 12:45 AM
Description: Exception in server tick loop

java.lang.ExceptionInInitializerError
at net.minecraft.class_1937.md6767db$lambda$static$0$0(class_1937.java:1233)
at net.minecraft.class_1937$$Lambda$1303/1874138331.get(Unknown Source)
at net.minecraft.class_3528.method_15332(class_3528.java:16)
at net.minecraft.class_1937.handler$zzi000$initComponents(class_1937.java:1240)
at net.minecraft.class_1937.(class_1937.java:153)
at net.minecraft.class_3218.(class_3218.java:186)
at net.minecraft.server.MinecraftServer.method_3786(MinecraftServer.java:368)
at net.minecraft.server.MinecraftServer.method_3735(MinecraftServer.java:335)
at net.minecraft.class_1132.method_3823(class_1132.java:67)
at net.minecraft.server.MinecraftServer.method_29741(MinecraftServer.java:645)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:257)
at net.minecraft.server.MinecraftServer$$Lambda$4532/1194063212.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Failed to hack fabric API
at dev.onyxstudios.cca.internal.base.ComponentsInternals.(ComponentsInternals.java:56)
... 13 more
Caused by: java.lang.NoSuchFieldException: type
at java.lang.Class.getDeclaredField(Class.java:2070)
at dev.onyxstudios.cca.internal.base.ComponentsInternals.(ComponentsInternals.java:52)
... 13 more

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

-- System Details --
Details:
Minecraft Version: 1.16.5
Minecraft Version ID: 1.16.5
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 10475941160 bytes (9990 MB) / 11173625856 bytes (10656 MB) up to 21474836480 bytes (20480 MB)
CPUs: 12
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx20G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
Fabric Mods:
autoconfig1u: Auto Config v1 Updated 3.3.1
bosses_of_mass_destruction: Bosses of Mass Destruction (Beta) 1.0.2-1.16.5
cardinal-components-base: Cardinal Components API (base) 2.7.10
cardinal-components-entity: Cardinal Components API (entities) 2.7.10
cardinal-components-world: Cardinal Components API (worlds) 2.7.10
fabric: Fabric API 0.34.2+1.16
fabric-api-base: Fabric API Base 0.3.0+c88702897d
fabric-api-lookup-api-v1: Fabric API Lookup API (v1) 1.0.0+dc716ea17d
fabric-biome-api-v1: Fabric Biome API (v1) 3.1.1+ca58154a7d
fabric-blockrenderlayer-v1: Fabric BlockRenderLayer Registration (v1) 1.1.5+ca58154a7d
fabric-command-api-v1: Fabric Command API (v1) 1.1.1+351679a77d
fabric-commands-v0: Fabric Commands (v0) 0.2.2+ca58154a7d
fabric-containers-v0: Fabric Containers (v0) 0.1.11+9354966b7d
fabric-content-registries-v0: Fabric Content Registries (v0) 0.2.1+ca58154a7d
fabric-crash-report-info-v1: Fabric Crash Report Info (v1) 0.1.3+ca58154a7d
fabric-dimensions-v1: Fabric Dimensions API (v1) 2.0.6+61336ba97d
fabric-entity-events-v1: Fabric Entity Events (v1) 1.1.0+c88702897d
fabric-events-interaction-v0: Fabric Events Interaction (v0) 0.4.2+ca58154a7d
fabric-events-lifecycle-v0: Fabric Events Lifecycle (v0) 0.2.1+ca58154a7d
fabric-game-rule-api-v1: Fabric Game Rule API (v1) 1.0.6+ca58154a7d
fabric-item-api-v1: Fabric Item API (v1) 1.2.1+ca58154a7d
fabric-item-groups-v0: Fabric Item Groups (v0) 0.2.7+2868a2287d
fabric-key-binding-api-v1: Fabric Key Binding API (v1) 1.0.4+9354966b7d
fabric-keybindings-v0: Fabric Key Bindings (v0) 0.2.1+ca58154a7d
fabric-language-kotlin: Fabric Language Kotlin 1.5.0+kotlin.1.4.31
fabric-lifecycle-events-v1: Fabric Lifecycle Events (v1) 1.2.1+ca58154a7d
fabric-loot-tables-v1: Fabric Loot Tables (v1) 1.0.2+ca58154a7d
fabric-mining-levels-v0: Fabric Mining Levels (v0) 0.1.3+ca58154a7d
fabric-models-v0: Fabric Models (v0) 0.3.0+bc7a746f7d
fabric-networking-api-v1: Fabric Networking API (v1) 1.0.3+e3c9d0627d
fabric-networking-blockentity-v0: Fabric Networking Block Entity (v0) 0.2.8+ca58154a7d
fabric-networking-v0: Fabric Networking (v0) 0.3.2+ca58154a7d
fabric-object-builder-api-v1: Fabric Object Builder API (v1) 1.9.5+c88702897d
fabric-object-builders-v0: Fabric Object Builders (v0) 0.7.2+ca58154a7d
fabric-particles-v1: Fabric Particles (v1) 0.2.4+ca58154a7d
fabric-registry-sync-v0: Fabric Registry Sync (v0) 0.7.4+ca58154a7d
fabric-renderer-api-v1: Fabric Renderer API (v1) 0.4.2+2868a2287d
fabric-renderer-indigo: Fabric Renderer - Indigo 0.4.4+ca58154a7d
fabric-renderer-registries-v1: Fabric Renderer Registries (v1) 2.3.0+2868a2287d
fabric-rendering-data-attachment-v1: Fabric Rendering Data Attachment (v1) 0.1.5+ca58154a7d
fabric-rendering-fluids-v1: Fabric Rendering Fluids (v1) 0.1.13+ca58154a7d
fabric-rendering-v0: Fabric Rendering (v0) 1.1.2+ca58154a7d
fabric-rendering-v1: Fabric Rendering (v1) 1.6.0+2868a2287d
fabric-resource-loader-v0: Fabric Resource Loader (v0) 0.4.6+2868a2287d
fabric-screen-api-v1: Fabric Screen API (v1) 1.0.0+c045166c7d
fabric-screen-handler-api-v1: Fabric Screen Handler API (v1) 1.1.5+9354966b7d
fabric-structure-api-v1: Fabric Structure API (v1) 1.1.4+ca58154a7d
fabric-tag-extensions-v0: Fabric Tag Extensions (v0) 1.1.1+ca58154a7d
fabric-textures-v0: Fabric Textures (v0) 1.0.6+ca58154a7d
fabric-tool-attribute-api-v1: Fabric Tool Attribute API (v1) 1.2.7+8183d3957d
fabricloader: Fabric Loader 0.11.3
geckolib3: Geckolib 3.0.34
java: Java HotSpot(TM) 64-Bit Server VM 8
maelstrom_library: Maelstrom Library 1.2-1.16.5
minecraft: Minecraft 1.16.5
multipart_entities: MultipartEntities 1.1.1-SNAPSHOT
org_jetbrains_kotlin_kotlin-reflect: kotlin-reflect 1.4.31
org_jetbrains_kotlin_kotlin-stdlib: kotlin-stdlib 1.4.31
org_jetbrains_kotlin_kotlin-stdlib-jdk7: kotlin-stdlib-jdk7 1.4.31
org_jetbrains_kotlin_kotlin-stdlib-jdk8: kotlin-stdlib-jdk8 1.4.31
org_jetbrains_kotlinx_kotlinx-coroutines-core-jvm: kotlinx-coroutines-core-jvm 1.4.2
org_jetbrains_kotlinx_kotlinx-coroutines-jdk8: kotlinx-coroutines-jdk8 1.4.2
org_jetbrains_kotlinx_kotlinx-serialization-core-jvm: kotlinx-serialization-core-jvm 1.1.0
org_jetbrains_kotlinx_kotlinx-serialization-json-jvm: kotlinx-serialization-json-jvm 1.1.0
Player Count: 0 / 8; []
Data Packs: vanilla (incompatible), Fabric Mods
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fabric'

Go ahead and pick up the alpha version of the mod - it should fix this issue. Basically cardinal components 2.7.10 is not compatible with the newest versions of fabric api.