I only added 4 mods, and already there are missing data fixers?

4Mods 8_15_20

[16:00:01] [main/INFO]: ModLauncher running: args [--username, Yourname942, --version, forge-31.2.36, --gameDir, C:\Users\Greg\Twitch\Minecraft\Instances\The Land of Super Friends 2, --assetsDir, C:\Users\Greg\Twitch\Minecraft\Install\assets, --assetIndex, 1.15, --uuid, 9cdcb21b254b4fb0ab70bf74da368d9c, --accessToken, ????????, --userType, mojang, --versionType, release, --width, 2560, --height, 1440, --launchTarget, fmlclient, --fml.forgeVersion, 31.2.36, --fml.mcVersion, 1.15.2, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20200515.085601]
[16:00:01] [main/INFO]: ModLauncher 5.1.2+70+master.2845bb9 starting: java version 1.8.0_51 by Oracle Corporation
[16:00:01] [main/INFO]: Added Lets Encrypt root certificates as additional trust
[16:00:02] [main/INFO]: [org.antlr.v4.runtime.ConsoleErrorListener:syntaxError:38]: line 13:99 token recognition error at: ';'
[16:00:02] [main/INFO]: Launching target 'fmlclient' with arguments [--version, forge-31.2.36, --gameDir, C:\Users\Greg\Twitch\Minecraft\Instances\The Land of Super Friends 2, --assetsDir, C:\Users\Greg\Twitch\Minecraft\Install\assets, --uuid, 9cdcb21b254b4fb0ab70bf74da368d9c, --username, Yourname942, --assetIndex, 1.15, --accessToken, ????????, --userType, mojang, --versionType, release, --width, 2560, --height, 1440]
[16:00:03] [Render thread/INFO]: Setting user: Yourname942
[16:00:08] [Render thread/INFO]: Backend library: LWJGL version 3.2.2 build 10
[16:00:08] [Render thread/WARN]: No data fixer registered for entity merpig:merpig
[16:00:08] [Render thread/INFO]: Potentially Dangerous alternative prefix `merpig` for name `merpig`, expected `minecraft`. This could be a intended override, but in most cases indicates a broken mod.
[16:00:08] [modloading-worker-13/INFO]: Forge mod loading, version 31.2.36, for MC 1.15.2 with MCP 20200515.085601
[16:00:08] [modloading-worker-13/INFO]: MinecraftForge v31.2.36 Initialized
[16:00:09] [Render thread/WARN]: No data fixer registered for entity abnormals_core:boat
[16:00:09] [Render thread/WARN]: No data fixer registered for entity buzzierbees:honey_slime
[16:00:09] [Render thread/WARN]: No data fixer registered for entity buzzierbees:grizzly_bear
[16:00:09] [Render thread/WARN]: No data fixer registered for entity buzzierbees:black_bear
[16:00:09] [Render thread/WARN]: No data fixer registered for entity buzzierbees:bumblebee
[16:00:10] [Render thread/INFO]: Narrator library for x64 successfully loaded
[16:00:10] [Render thread/INFO]: Reloading ResourceManager: Default, Mod Resources
[16:00:10] [Server-Worker-6/WARN]: Configuration file C:\Users\Greg\Twitch\Minecraft\Instances\The Land of Super Friends 2\config\abnormals_core-common.toml is not correct. Correcting
[16:00:10] [Server-Worker-6/WARN]: Incorrect key common was corrected from null to SimpleCommentedConfig:{}
[16:00:10] [Server-Worker-6/WARN]: Incorrect key common.quarkSignEditing was corrected from null to true
[16:00:10] [Server-Worker-6/WARN]: Incorrect key common.signEditingRequiresEmptyHand was corrected from null to false
[16:00:10] [Server-Worker-6/WARN]: Incorrect key common.poisonousPotatoCompat was corrected from null to SimpleCommentedConfig:{}
[16:00:10] [Server-Worker-6/WARN]: Incorrect key common.poisonousPotatoCompat.poisonPotatoCompatEnabled was corrected from null to true
[16:00:10] [Server-Worker-6/WARN]: Incorrect key common.poisonousPotatoCompat.poisonEffect was corrected from null to true
[16:00:10] [Server-Worker-6/WARN]: Incorrect key common.poisonousPotatoCompat.poisonChance was corrected from null to 0.1
[16:00:10] [Server-Worker-6/INFO]: Dispatching synchronous work after COMMON_SETUP: 2 jobs
[16:00:10] [Forge Version Check/INFO]: [forge] Starting version check at https://files.minecraftforge.net/maven/net/minecraftforge/forge/promotions_slim.json
[16:00:10] [Server-Worker-6/INFO]: Synchronous work queue completed in 00:00:00.069
[16:00:10] [Server-Worker-6/INFO]: Dispatching synchronous work after SIDED_SETUP: 1 jobs
[16:00:10] [Server-Worker-6/INFO]: Synchronous work queue completed in 00:00:00.009
[16:00:11] [Forge Version Check/INFO]: [forge] Found status: AHEAD Current: 31.2.36 Target: null
[16:00:12] [Render thread/INFO]: Endimation Data Manager has Loaded 1 Endimations
[16:00:12] [Render thread/INFO]: OpenAL initialized.
[16:00:12] [Render thread/INFO]: Sound engine started
[16:00:12] [Render thread/INFO]: Created: 1024x512x4 minecraft:textures/atlas/blocks.png-atlas
[16:00:12] [Render thread/INFO]: Created: 128x128x4 minecraft:textures/atlas/signs.png-atlas
[16:00:12] [Render thread/INFO]: Created: 512x512x4 minecraft:textures/atlas/banner_patterns.png-atlas
[16:00:12] [Render thread/INFO]: Created: 512x512x4 minecraft:textures/atlas/shield_patterns.png-atlas
[16:00:12] [Render thread/INFO]: Created: 256x256x4 minecraft:textures/atlas/chest.png-atlas
[16:00:12] [Render thread/INFO]: Created: 512x256x4 minecraft:textures/atlas/beds.png-atlas
[16:00:12] [Render thread/INFO]: Created: 512x256x4 minecraft:textures/atlas/shulker_boxes.png-atlas
[16:00:13] [Render thread/INFO]: Created: 256x256x0 minecraft:textures/atlas/particles.png-atlas
[16:00:13] [Render thread/INFO]: Created: 256x256x0 minecraft:textures/atlas/paintings.png-atlas
[16:00:13] [Render thread/INFO]: Created: 256x128x0 minecraft:textures/atlas/mob_effects.png-atlas
[16:00:16] [Render thread/INFO]: Stopping!