unresolved external symbol "__declspec(dllimport)" - c++

Question

I'm trying to code a little plugin for bakkesmod because I'm pissing myself off.
I watched the only 2 video that exists on this topic but ... it doesn't work and I have this error for each void - >> Severity Code Description Project File Line Suppression State
Error LNK2001 unresolved external symbol "__declspec(dllimport) public: void __thiscall GameWrapper::HookEvent(class std::basic_string<char,struct std::char_traits,class std::allocator >,class std::function<void __cdecl(class std::basic_string<char,struct std::char_traits,class std::allocator >)>)" (_imp?HookEvent#GameWrapper##QAEXV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std##V?$function#$$A6AXV?$basic_string#DU?$char_traits#D#std##V?$allocator#D#2##std###Z#3##Z) TagName C:\Users\leodu\source\repos\TagName\TagName\TrollTagName.obj 1
here is my code.
TroolTagName.cpp (not judge the name)
#include "TrollTagName.h"
BAKKESMOD_PLUGIN(TroolTagName, "Trool Tag Name", "1.0", PERMISSION_ALL)
void TroolTagName::onLoad()
{
this->Log("This is my first Bakkesmod Plugin");
this->LoadHooks();
}
void TroolTagName::onUnload()
{
}
void TroolTagName::LoadHooks()
{
gameWrapper->HookEvent("Function TAGame.GameEvent_Soccar_TA.EventMatchEnded", std::bind(&TroolTagName::GameEndedEvent, this, std::placeholders::_1));
gameWrapper->HookEvent("Function TAGame.AchievementManager_TA.HandleMatchEnded", std::bind(&TroolTagName::GameEndedEvent, this, std::placeholders::_1));
}
void TroolTagName::GameEndedEvent(std::string name)
{
cvarManager->executeCommand("load_freeplay");
}
void TroolTagName::Log(std::string msg)
{
cvarManager->log("TroolTagName: " + msg);
}
TroolTagName.h
#include "bakkesmod\plugin\bakkesmodplugin.h"
#pragma comment(lib, "pluginsdk.lib")
class TroolTagName : public BakkesMod::Plugin::BakkesModPlugin
{
public:
virtual void onLoad();
virtual void onUnload();
void LoadHooks();
void GameEndedEvent(std::string name);
private:
void Log(std::string msg);
};
The project and a Dynamic-library dll project.
I tried adding __declspec (dllexport) before void but ... I got this error - >> redefinition; different linkage and I found nothing for this error so I am blocked :(