It is this error that I encounter when I create large mod packs, and not for the first time, I don’t know what to do, because I didn’t find duplicate mods in the folder!

Please post debug.log from the logs folder.

1 hour ago, Luis_ST said:

Please post debug.log from the logs folder.

file:///C:/Users/pc-00/AppData/Roaming/.minecraft/versions/DimCraft%20Modpack%20v.%20Beta%201/logs/latest.log

this or no?

2 minutes ago, SerBiuUM said:

file:///C:/Users/pc-00/AppData/Roaming/.minecraft/versions/DimCraft%20Modpack%20v.%20Beta%201/logs/latest.log

This is a file on your computer we can not access to it.
Also this is the latest.log not the debug.log.

1 minute ago, Luis_ST said:

Это файл на вашем компьютере, мы не можем получить к нему доступ.
Также это последний.лог, а не отладочный.лог.

well, what folder is it in, I just don't know much about game files

The debug.log should be in the logs folder of your game directory, normally in .minecraft/logs.

25 minutes ago, Luis_ST said:

Журнал debug.log должен находиться в папке logs в папке с игрой, обычно в .minecraft/logs.

firstly, for some reason I don’t have this file, I looked through the entire .minecraft folder, secondly, I can’t send .log or .txt here

2 minutes ago, SerBiuUM said:

firstly, for some reason I don’t have this file, I looked through the entire .minecraft folder

There is always a debug.log, if you are using CurseForge you need to enable the debug.log in the settings.

3 minutes ago, SerBiuUM said:

secondly, I can’t send .log or .txt here

You can use https://gist.github.com/ to upload text files.

22 minutes ago, Luis_ST said:

Всегда есть отладочный журнал, если вы используете CurseForge, вам нужно включить отладочный журнал в настройках.

Вы можете использовать https://gist.github.com/ для загрузки текстовых файлов.

https://gist.github.com/serbiuum/0fde1d845042f40bb639ab5343880543