Fatal error: Uncaught Error: Call to undefined method Anund\Pfirsich\Utils\DateHelper::getDateUrl() in /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-content/themes/nektarine/inc/wc_event_filter.php:140
Stack trace:
#0 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/class-wp-hook.php(326): custom_product_permalink('https://pfirsi....', Object(WP_Post))
#1 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/plugin.php(205): WP_Hook->apply_filters('https://pfirsi....', Array)
#2 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/link-template.php(375): apply_filters('post_type_link', 'https://pfirsi....', Object(WP_Post), false, false)
#3 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/link-template.php(201): get_post_permalink(Object(WP_Post), false, false)
#4 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-content/plugins/all-in-one-seo-pack/app/Common/Sitemap/Content.php(655): get_permalink(Object(WP_Post))
#5 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-content/plugins/all-in-one-seo-pack/app/Common/Sitemap/Content.php(30): AIOSEO\Plugin\Common\Sitemap\Content->rss()
#6 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-content/plugins/all-in-one-seo-pack/app/Common/Sitemap/Sitemap.php(338): AIOSEO\Plugin\Common\Sitemap\Content->get()
#7 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-content/plugins/all-in-one-seo-pack/app/Common/Sitemap/RequestParser.php(132): AIOSEO\Plugin\Common\Sitemap\Sitemap->generate()
#8 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-content/plugins/all-in-one-seo-pack/app/Common/Sitemap/RequestParser.php(75): AIOSEO\Plugin\Common\Sitemap\RequestParser->checkForRssSitemap()
#9 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/class-wp-hook.php(324): AIOSEO\Plugin\Common\Sitemap\RequestParser->checkRequest(Object(WP))
#10 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array)
#11 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/plugin.php(565): WP_Hook->do_action(Array)
#12 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/class-wp.php(418): do_action_ref_array('parse_request', Array)
#13 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/class-wp.php(818): WP->parse_request('')
#14 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-includes/functions.php(1342): WP->main('')
#15 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-blog-header.php(16): wp()
#16 /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/index.php(17): require('/home/httpd/vho...')
#17 {main}
  thrown in /home/httpd/vhosts/pfirsi.ch/httpdocs_ch_pfirsi_2015/wp-content/themes/nektarine/inc/wc_event_filter.php on line 140