Shopify says the issue has been resolved but some merchants would like more transparency about exactly what happened.
Some Shopify merchants are reporting buyers are unable to complete checkout in their stores today due to an error that causes the checkout button to loop back to the cart.
Shopify says the issue may be affecting stores where Google Tag Manager is present.
Storefronts that use Google Tag Manager may have issues directing customers from the cart page to checkout. We recommend temporarily disabling Google Tag Manager code as a workaround while our developers continue to investigate.
Aug 31, 2022 at 10:05 AM
Our developers are continuing to investigate.
Aug 31, 2022 at 05:53 AM
So far, the stores reporting this issue all have a reference to Google Tag Manager (googletagmanager.com) somewhere in the theme code. Temporarily disabling that part of the theme code (which may be in the admin checkout settings) solves the problem for now. Our developers are continuing to investigate.
Aug 31, 2022 at 04:36 AM
We have received reports that some merchants without Google Tag Manager may also be affected. The workaround of temporarily disabling Google Tag Manager may still be effective. We will continue to update you as we investigate further.
While Shopify continues to investigate, some helpful users are sharing workarounds they've tested to temporarily fix the issue by editing their theme files.
I'll update as more information becomes available. In the meantime, if you're experiencing problems with Shopify checkout today, let us know in the comments below!