Почему не заполняется список?

void HashTable::insert(int student_number, std::string f_name, std::string m_name, std::string l_name, std::string debts)
{
    
    student_info *node=students[hash(student_number)];
    if(!node)
    {
        node = new student_info(student_number,f_name,m_name,l_name,debts,nullptr);
    }
    else
    {
        student_info *temp = students[hash(student_number)];
        while (temp->next)
        {
            temp = temp->next;
        }
        node = temp->next;
        node = new student_info(student_number, f_name, m_name, l_name, debts, nullptr);
        temp->next = node;
        
    }
}

void HashTable::insert(int student_number, std::string f_name, std::string m_name, std::string l_name, std::string debts)
{
    
    student_info *node=students[hash(student_number)];
    if(!node)
    {
        students[hash(student_number)] = new student_info(student_number,f_name,m_name,l_name,debts,nullptr);
    }
    else
    {
        while (node->next)
        {
            node = node->next;
        }
        node->next = new student_info(student_number, f_name, m_name, l_name, debts, nullptr);
        
    }
}