RLCraft Mod Not Working on Aternos

Alright, this is my first time using a Modpack

I'm trying to download the RLCraft Modpack:

https://aternos.org/software/v/modpacks/curse_rlcraft

RLCraft modpack works fine on singleplayer offline games
But when i try to enter my server, i receive

"Fatally Missing Registry Entries"

or

"Internal Exception: com.google.common.util.concurrent.UncheckedExecutionException: java.lang.IllegalStateException:Recipe minecraft:snow_layer(new.minecraft.item.crafting.ShapedRecipes@11a7840f)produces unregistered item minecraft:snow_layer (net.minecraft.item.ItemSnow@42b500aa)"

This is the log:

https://mclo.gs/jjKOfix

It is noteworthy that:

This errors occurred Immediately after the server goes live.

Yes
i am using Tlauncher Forge 1.12.2
Currently do not have any other mod installed other than a skin

With reference to the Modpack's site

https://www.curseforge.com/minecraft/modpacks/rlcraft/files

i have downloaded the Modpack named:

RLCraft Server Pack 1.12.2 - Beta v2.8.1.zip

However, it seems as though i am missing certain mods from the modpack.

But as far as i am aware, i have no means of accessing RLCraft Modpack accessed by the Aternos server.

Simply put, i have no idea what mods does the server is using.

Without the information above, i am unable to confirm if i have downloaded the necessary mods.

I have copied the Mods and Configs into my minecraft's mods and config folders respectively

I am unsure of what you mean by "etc."

As this is my first time downloading a Modpack, i simply followed the steps i took when downloading individual mods.

Are there additional steps necessary when it comes to downloading modpacks as compared to individual mods?