Describe the bug
It dosen't work for me I get in and when i start a new world I get a The game crashed whilst unexpected error Error: java.lang.NoSuchMethodError: 'boolean net.minecraftforge.client.extensions.common.IClientMobEffectExtensions.renderGuiIcon(net.minecraft.world.effect.MobEffectInstance, net.minecraft.client.gui.Gui, com.mojang.blaze3d.vertex.PoseStack, int, int, float, float)' I dont know why can someone help me?

The template is still not for decoration purposes, fill it out.

Describe the bug

It dosen't work for me I get in and when i start a new world I get a The game crashed whilst unexpected error Error: java.lang.NoSuchMethodError: 'boolean net.minecraftforge.client.extensions.common.IClientMobEffectExtensions.renderGuiIcon(net.minecraft.world.effect.MobEffectInstance, net.minecraft.client.gui.Gui, com.mojang.blaze3d.vertex.PoseStack, int, int, float, float)' I dont know why can someone help me?

Berta.

To Reproduce
Steps to reproduce the behavior:

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Screenshots
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Version
MCA Version, Minecraft version, Modloader

Latest.log
Append the log, just drag and drop the file here.
You will find the file in the (launcher and profile specific) minecraft save directory, in logs, called latest.log. On Windows by default %appdata%/.minecraft/logs/latest.log.

let´s do that then. could you be so kind & explain how to fill out the template

Its the one you deleted when creating the issue. It tells you exactly what is required and where to find it. In #676 its still there, for reference.