Method error

3rd_party/lua_sol2/include/sol.hpp:420–422

	public:
		error(const std::string& str)
		: error(detail::direct_error, "lua: error: " + str) {
		}
		error(std::string&& str)
		: error(detail::direct_error, "lua: error: " + std::move(str)) {
		}