eCommerce package store page not displaying correctly

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I use Concrete5 on my server and have purchased the eCommerce package. Everything was working fine until out of nowhere, the store page that displays all of our items has stopped working. What could cause this? Both Concrete5 and eCommerce are up to date and no recent changes have been made to that page, or even the site for that matter.

The product page is also not displaying correctly at all.

Please let me know if anymore information is required and I'd be happy to give it to you.

Thanks!!