Grand Total does not show

Grand Total does not show

Hi, I have a problem from last week. When I create an invoice the grand total field appears empty. I have tried with different templates but it only works with the original one, which it is in english and we need to create the invoice in spanish language.

I have seen a lot of comments in the forum about this issue but I do not see any solution.

Could you help me, please. As you can understand this is very very important for us.

Thanks