Fatal error: Uncaught Error: Unsupported operand types: string * int
in /data/www.raffini-kinderevents.de/old.raffini-kinderevents.de/public/wp-content-old/plugins/nextgen-gallery/src/DisplayTypes/Thumbnails.php on line 72

Call stack:

1. Imagely\N\D\Thumbnails::index_action()
   wp-content-old/plugins/nextgen-gallery/src/DisplayedGallery/Renderer.php:417
2. Imagely\N\D\Renderer::render()
   wp-content-old/plugins/nextgen-gallery/src/IGW/ATPManager.php:204
3. Imagely\N\I\ATPManager::substitute_placeholder_imgs()
   wp-includes/class-wp-hook.php:324
4. WP_Hook::apply_filters()
   wp-includes/plugin.php:205
5. apply_filters()
   wp-includes/formatting.php:3980
6. wp_trim_excerpt()
   wp-includes/class-wp-hook.php:324
7. WP_Hook::apply_filters()
   wp-includes/plugin.php:205
8. apply_filters()
   wp-includes/post-template.php:436
9. get_the_excerpt()
   wp-content-old/plugins/wordpress-seo/src/helpers/post-helper.php:86
10. Yoast\W\S\H\Post_Helper::get_the_excerpt()
    wp-content-old/plugins/wordpress-seo/src/presentations/indexable-post-type-presentation.php:196
11. Yoast\W\S\P\Indexable_Post_Type_Presentation::generate_open_graph_description()
    wp-content-old/plugins/wordpress-seo/src/presentations/abstract-presentation.php:66
12. Yoast\W\S\P\Abstract_Presentation::__get()
    wp-content-old/plugins/wordpress-seo/src/presenters/open-graph/description-presenter.php:33
13. Yoast\W\S\P\O\Description_Presenter::get()
    wp-content-old/plugins/wordpress-seo/src/presenters/abstract-indexable-tag-presenter.php:37
14. Yoast\W\S\P\Abstract_Indexable_Tag_Presenter::present()
    wp-content-old/plugins/wordpress-seo/src/integrations/front-end-integration.php:406
15. Yoast\W\S\I\Front_End_Integration::present_head()
    wp-includes/class-wp-hook.php:324
16. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:348
17. WP_Hook::do_action()
    wp-includes/plugin.php:517
18. do_action()
    wp-content-old/plugins/wordpress-seo/src/integrations/front-end-integration.php:377
19. Yoast\W\S\I\Front_End_Integration::call_wpseo_head()
    wp-includes/class-wp-hook.php:324
20. WP_Hook::apply_filters()
    wp-includes/class-wp-hook.php:348
21. WP_Hook::do_action()
    wp-includes/plugin.php:517
22. do_action()
    wp-includes/general-template.php:3065
23. wp_head()
    wp-content-old/themes/astra/header.php:31
24. require_once()
    wp-includes/template.php:810
25. load_template()
    wp-includes/template.php:745
26. locate_template()
    wp-includes/general-template.php:48
27. get_header()
    wp-content-old/themes/raffini/page.php:20
28. include()
    wp-includes/template-loader.php:106
29. require_once()
    wp-blog-header.php:19
30. require()
    index.php:17