Hello,
I used to use the Klaviyo Back in stock button in my Shopify store and everything was running good.
Suddenly, since several days, the Back in stock button shows and disappears randomly from my store. Sometime, it is live and sometimes not.
In my theme.liquid file, I have this error in the Klaviyo script.
Line code: <script src="https://a.klaviyo.com/media/js/onsite/onsite.js"></script>
Error: Avoid parser blocking script by adding 'defer' or 'async' in this tag
Can someone help?
Thank you very much!