Stack Overflow 9615 when using AEM Offers in Campaign Classic

[andregonzalez]

Hi everyone!

This time I come to our community to ask you if you have experienced an Stack Overflow 9615 error while trying to approve AEM Offers in design inside Adobe Campaign Classic instance (below image). It does not let me to approve the offer, so I could work with it.

This is an Offer with a large html to use as an email ecard, that I need to try in an Email Delivery so I could check how it renders. This HTML is not minified, and the Offer does not show me a preview of it when I try to see it from that tab.

Could you please help me with this trouble? I am grateful beforehand  

Best regards!