Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method RandomPosts::execute() cannot be called statically in /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-content/plugins/post-plugin-library/common_functions.php:586 Stack trace: #0 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-includes/class-wp-hook.php(324): ppl_post_filter('<div class="soc...') #1 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-includes/plugin.php(205): WP_Hook->apply_filters('<div class="soc...', Array) #2 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-includes/post-template.php(256): apply_filters('the_content', '<a href="http:/...') #3 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-content/themes/twentyfourteen/content.php(56): the_content('\xE7\xB6\x9A\xE3\x81\x8D\xE3\x82\x92\xE8\xAA\xAD\xE3\x82\x80...') #4 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-includes/template.php(812): require('/home/yuyakikuz...') #5 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-includes/template.php(745): load_template('/home/yuyakikuz...', false, Array) #6 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-includes/general-template.php(206): locate_template(Array, true, false, Array) #7 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-content/themes/twentyfourteen/single.php(24): get_template_part('content', '') #8 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-includes/template-loader.php(106): include('/home/yuyakikuz...') #9 /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-blog-header.php(19): require_once('/home/yuyakikuz...') #10 /home/yuyakikuzawa/yellow-goose.com/public_html/food/index.php(17): require('/home/yuyakikuz...') #11 {main} thrown in /home/yuyakikuzawa/yellow-goose.com/public_html/food/wp/wp-content/plugins/post-plugin-library/common_functions.php on line 586