C++ Compile error 1.3

[Zombiegod]

so when i attempt to compile i am getting

'spellBlock_t::spellBlock_t(const spellBlock_t &)': attempting to reference a deleted function

The bit of code that is causing it is

if (root) {
            for (pugi::xml_node tmpNode = root.first_child(); tmpNode; tmpNode = tmpNode.next_sibling())
            {
                spellBlock_t sb;
                if (g_monsters.deserializeSpell(tmpNode, sb, "doCreateCustomMonster")) {
                    pobranyTyp->info.attackSpells.push_back(sb);
                }
            }

i have tried changing it, but w/e i try does not work i get "undefined" ect.