MCreator cannot access mcreator.minecraft.link package

A somewhat old feature of Mcreator is Mcreator link (https://mcreator.net/link), which allows you to hook up Minecraft to an Arduino. However, when enabling the API and using Mcreator link procedure, the game does not launch and returns "package net.mcreator.minecraft.link does not exist" and "error: cannot find symbol". As the mod is updated to 1.21.4 I thought it would work with the latest version of minecraft; any ideas why this happens? 

C:\Users\Mihail-PC\MCreatorWorkspaces\real_pain\src\main\java\net\mcreator\realpain\procedures\PAINProcedure.java:13: error: package net.mcreator.minecraft.link does not exist import net.mcreator.minecraft.link.CurrentDevice;
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