@page.show_title_and_feature_image is not used

[s3tupw1zard]

When uploading the latest zip file from releases to my self-hosted Ghost blog I'm getting the following warning:

When I click Activate with errors the featured image on my posts are fullscreen and can't customize the size.

I'm using the latest version of Ghost.

Thanks

[emanuelevivoli]

same here

[Mark24Slides]

Have the same, version 5.81.0:

[2024-03-27 08:13:53] WARN The currently active theme "casper" has errors, but will still work.

The currently active theme "casper" has errors, but will still work.

Error ID:
    f33ffc00-ec11-11ee-b414-ddd5612ef595

Details:
    checkedVersion: 5.x
    name:           casper
    path:           /var/lib/ghost/content/themes/casper
    version:        4.0.1
    errors: 
      - 
        fatal:    false
        level:    error
        rule:     Not all page features are being used
        details:  <b>This error only applies to pages created with the Beta editor.</b> Some page features used by Ghost via the <code>{{@page}}</code> global are not implemented in this theme.&nbsp;Find more information about the <code>{{@page}}</code> global <a href="https://ghost.org/docs/themes/helpers/page/" target=_blank>here</a>.
        failures: 
          - 
            ref:     page.hbs
            message: @page.show_title_and_feature_image is not used
            rule:    GS110-NO-MISSING-PAGE-BUILDER-USAGE

[gjrtimmer]

I have the same problem.