Das Leben ist anstrengend aber wunderschön!

Fatal error: Uncaught ValueError: Unknown format specifier "," in /homepages/26/d607019784/htdocs/clickandbuilds/LieblingsGedanke121400/wp-content/themes/Extra/includes/template-tags.php:223 Stack trace: #0 /homepages/26/d607019784/htdocs/clickandbuilds/LieblingsGedanke121400/wp-content/themes/Extra/includes/template-tags.php(223): sprintf('Bewertung:% 0,2...', 0) #1 /homepages/26/d607019784/htdocs/clickandbuilds/LieblingsGedanke121400/wp-content/themes/Extra/includes/template-tags.php(1549): extra_get_post_rating_stars(773) #2 /homepages/26/d607019784/htdocs/clickandbuilds/LieblingsGedanke121400/wp-content/themes/Extra/includes/template-tags.php(1507): et_extra_display_post_meta(Array) #3 /homepages/26/d607019784/htdocs/clickandbuilds/LieblingsGedanke121400/wp-content/themes/Extra/single-post.php(36): extra_display_single_post_meta() #4 /homepages/26/d607019784/htdocs/clickandbuilds/LieblingsGedanke121400/wp-includes/template-loader.php(106): include('/homepages/26/d...') #5 /homepages/26/d607019784/htdocs/clickandbuilds/LieblingsGedanke121400/wp-blog-header.php(19): require_once('/homepages/26/d...') #6 /homepages/26/d607019784/htdocs/clickandbuilds/LieblingsGedanke121400/index.php(17): require('/homepages/26/d...') #7 {main} thrown in /homepages/26/d607019784/htdocs/clickandbuilds/LieblingsGedanke121400/wp-content/themes/Extra/includes/template-tags.php on line 223