On the day the error was raised(last Friday), the latest thing we did was to add a slideshow section to the site.
On a sidenote (This may be totally unrelated but I'm just listing it down to explain what I did today in case it helps):
Today, while I was trying to debug this I looked at developer tools and saw an error regarding the free shipping bar app we had(https://apps.shopify.com/free-shipping-bar). The free shipping bar was technically still there, but if you looked at the site it was not showing (covered by the slideshow). Hence I deleted the free shipping bar app and the error in developer tools went away. However, the error 'Unparsable structured data' is still there.
Any help/explanation will be appreciated. Thank you!