Hello @mrihridoy-1,
Thank you for choosing CartFlows and writing in!
This sounds like a third-party plugin or theme conflict. Here’s what we can do to make sure:
Firstly, try to temporarily switch to another theme, like default themes like – Twenty-Twenty or Twenty-Nineteen, and check if the error or issue persists.
Next, you can deactivate all the plugins temporarily except CartFlows, WooCommerce, and your page builder plugin and see if that solves the error. If it does then activate plugins one by one to see which plugin is causing the problem.
Learn more about troubleshooting in WordPress: How to Troubleshoot a Conflict with the Plugin & Theme?
Hope this helps.
Let me know how it goes.