Hi,
f you have SP Simple Prortfolio then you can try this:
Please uninstall your SP Simple Portfolio component by 1st unpublishing your module/extension (from the Extensions\Modules tab) and trashing it.
Then go to Extensions tab again and navigate to "Manage" and find your SP Simple Portfolio extension, then unpublish it and then 'Uninstall' from menu option.
Download a fresh copy / package of the SP Simple Portfolio Extension from JoomShaper's Extensions Download page and reinstall, then recreate a module, and its content.
PS: you are basically then disassociating the original database associated with the template and allowing the Extension upon new installation to recreate a new / blank database that will work with current version of template
Hope this helps!
Note: Please take a full site backup before trying anything!
Best Regards