Parallel Function execution in class member function

I am attempting to run a class-member function in parallel from another class-member function in C++11:

class Class{
int arg1{0};
int arg2{1};
int arg3{2};
public:
   void test (){
       thread t = thread(&Class::parallelTest, this, arg1, ref(arg2), ref(arg3));

       t.join();
   }

   void prallelTest(int a, int& b, int& c){....}
}

int main(){
    Class c{};
    c.test();
    return 0;
}

but VS 17 shows me the following error:

Severity    Code    Description Project File    Line    Suppression State
Error   C2280   'std::thread::thread(const std::thread &)': attempting to reference a deleted function  Class c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.12.25827\include\xmemory0  945 

i searched a little but just found examples for parallel execution from the main function: Simple example of threading in C++

Can anybody please point me in the right direction?