Hello

Thank you for your query. How have you updated, please? Have you downloaded it from the link below and installed it manually?

https://www.joomshaper.com/joomla-extensions/sp-page-builder-pro-next

Can you please check if you have followed all the steps here, properly?

https://www.joomshaper.com/documentation/sp-page-builder/sp-page-builder-4/installation-update#span-style-font-weight-400-how-to-update-sp-page-builder-span

https://www.joomshaper.com/documentation/sp-page-builder/sp-page-builder-4/installation-update#span-style-font-weight-400-how-to-update-from-sp-page-builder-v3-x-to-v4-x-span