Hi there @gayuvj
Thank you for reaching out about this. From what I gather, you are unable to access your WooCommerce store after trying to upgrade to the latest version.
A picture is worth a thousand words, as the saying goes, therefore, could you share a screenshot of the screen where that message appears, please? https://snipboard.io/ is a good (online) tool of choice for sharing it here.
Furthermore, kindly clarify, are you able to recover from a backup?
If yes, to help you further, I’d like to understand more about your setup.
Could you please send me a copy of your site’s System Status? You can find it via WooCommerce > Status. Select Get system report and then Copy for support.
Once you’ve done that, you can paste the text in https://gist.github.com/ and feel free to change/remove your site URL in the report for privacy reasons.
You can paste the Gist link here in your reply, once you have that.
Looking forward to your response, thank you.
