Fix K9－ØØ号 ルプス (#2899)

c91025875.lua

@@ -81,6 +81,7 @@ function s.xyzop(e,tp,eg,ep,ev,re,r,rp)
 	if c:IsControler(1-tp) or not c:IsRelateToEffect(e) or c:IsFacedown() then return end
 	local mg=Duel.GetMatchingGroup(Card.IsFaceup,tp,LOCATION_MZONE,0,nil)
 	local exg=Duel.GetMatchingGroup(s.exgfilter,tp,LOCATION_EXTRA,0,nil,mg,c)
+	if #exg==0 then return end
 	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_SPSUMMON)
 	local sc=exg:Select(tp,1,1,nil):GetFirst()
 	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_XMATERIAL)