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Fatal error: Uncaught ArgumentCountError: Too few arguments to function mc_previous_post_link(), 2 passed in /homepages/23/d70180611/htdocs/wordpress-neu/wp-includes/class-wp-hook.php on line 298 and exactly 5 expected in /homepages/23/d70180611/htdocs/wordpress-neu/wp-content/plugins/my-calendar/my-calendar-core.php:1584 Stack trace: #0 /homepages/23/d70180611/htdocs/wordpress-neu/wp-includes/class-wp-hook.php(298): mc_previous_post_link('&laquo; <a href...', '<a href="http:/...') #1 /homepages/23/d70180611/htdocs/wordpress-neu/wp-includes/plugin.php(203): WP_Hook->apply_filters('&laquo; <a href...', Array) #2 /homepages/23/d70180611/htdocs/wordpress-neu/wp-content/themes/tegeljudo/functions.php(498): apply_filters('previous_post_l...', '&laquo; <a href...', '<a href="http:/...') #3 /homepages/23/d70180611/htdocs/wordpress-neu/wp-content/themes/tegeljudo/functions.php(424): theme_get_adjacent_post_link('&laquo; <a href...', '<a href="http:/...', false, '', true) #4 /homepages/23/d70180611/htdocs/wordpress-neu/wp-content/ in /homepages/23/d70180611/htdocs/wordpress-neu/wp-content/plugins/my-calendar/my-calendar-core.php on line 1584