Fatal error: Uncaught Error: Call to undefined function is_shop() in /www/htdocs/w0125806/build.antibiottics.de/wp-content/themes/minimal-grid/inc/template-tags.php:228 Stack trace: #0 /www/htdocs/w0125806/build.antibiottics.de/wp-includes/class-wp-hook.php(286): minimal_grid_archive_title('Day: January 30...') #1 /www/htdocs/w0125806/build.antibiottics.de/wp-includes/plugin.php(203): WP_Hook->apply_filters('Day: January 30...', Array) #2 /www/htdocs/w0125806/build.antibiottics.de/wp-includes/general-template.php(1522): apply_filters('get_the_archive...', 'Day: January 30...') #3 /www/htdocs/w0125806/build.antibiottics.de/wp-includes/general-template.php(1451): get_the_archive_title() #4 /www/htdocs/w0125806/build.antibiottics.de/wp-content/themes/minimal-grid/inc/hooks/inner-header.php(55): the_archive_title('<h1 class="entr...', '</h1>') #5 /www/htdocs/w0125806/build.antibiottics.de/wp-includes/class-wp-hook.php(286): minimal_grid_display_inner_header('') #6 /www/htdocs/w0125806/build.antibiottics.de/wp-includes/class-w in /www/htdocs/w0125806/build.antibiottics.de/wp-content/themes/minimal-grid/inc/template-tags.php on line 228