Not showing Download Button

I′ve installed this plugin with the Gallery PhotoBlocks but the download button doesn’t show up in the lightbox?

There′s also a console error (Loading error m.fn.init(1) –
i.onerror @ photoblocks.public.js?ver=1.1.35:350) but I don′t know if this is related to the download button not showing up.

Can you guys help me?

Thanks

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