Cannot read properties of undefined (reading 'data')

Hi

Thanks for contacting us and sorry for your issue. You can follow these methods below:

• Clear browser cached files (History > Clear History of browsing > Cache and Offline Mode Site Data > Clear all from the beginning).
• Check this same view using Incognito Mode (each browser has it, named "New Incognito Window").
• Check using a second, alternative browser, and make a hard refresh.
• Then as the last step clear Joomla Cache (from Admin: System > Clear Cache > Delete All).
• Reinstall the component and wait 3-5 minutes, on some hosting, by default there is a files cache.
• Check Joomla Admin using VPN (different IP), for example, using Opera browser has a free VPN.
• It should help, and give you again full access to the list of pages from SP Page Builder 5.x.

It may help you.

-Regards.