@KindOvLazy
After installing 7-zip or WinRAR, and downloading a mod, you'll have to right-click the file, click Open With and select 7-zip/WinRAR to open the file.

That problem would be better suited in a topic in Installation Help & Troubleshooting, or a comment on the respective mod.

To open mods you've downloaded you'll need 7-zip or WinRAR. To open game files (and mods with .oiv extension) you'll need OpenIV.

The mod probably has a bug.

@Williamfournol

Hello, there is also no history at all? (Google Translate)

I'm not exactly sure what you mean by "history." All comments made on a mod are visible on that mod's page, and 10 comments are visible on a user's profile page.

@DogFoXx
That is not relevant to this topic.
Here is a response to the bug you've mentioned: https://forums.gta5-mods.com/topic/24514/cannot-change-forum-profile-picture-infact-this-has-been-the-case-for-like-3-years/

If you don't need the mod to look like LSC, you can use Simple Trainer.

Would this help?

I just googled "gta v ped model tutorial" and found that

@PrepareForMayhem
Yes I have Discord. My username is Jitnaught#4171. You can also join the 5Mods Discord server, which I am on: https://forums.gta5-mods.com/topic/11384/pc-singleplayer-only-discord-server-for-gta5-mods-com-join-us

RPH is RAGE Plugin Hook: http://ragepluginhook.net/Downloads.aspx?Category=1

It is more probably one of the mods you have installed that requires the ASI loader. Which, if you are using the mods folder, is pretty much every single mod. Disable/remove each mod individually until you find the problematic one.

As a first test, try renaming the mods folder to something else to disable it, then check if the error occurs. If it still occurs, try renaming the scripts folder to something else to disable, and check again.
If disabling one of these folders fixes the problem, go into the folder and disable mods individually.
If disabling these folders didn't fix the problem, try disabling .asi mods individually by renaming them.

@PrepareForMayhem That error doesn't tell me much. Try compiling the mod in Debug and copy the .dll and .pdb files to the scripts folder, then try the mod again and it should hopefully give you a better error message.

If you copy those files you can also debug the mod from Visual Studio. Just go to Debug > Attach to Process in Visual studio and select GTA5, then Visual Studio will show you where the error is, and you can set breakpoints. I've heard that newer versions of GTA V don't like this though, and that you need to run RPH to be able to do this now.