PHP Fatal error

PHP Fatal error:  Uncaught Error: Call to undefined function ampforwp_related_post_loop_query() in /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/templates/design-manager/swift/single.php:192
Stack trace:
#0 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-post-template.php(444): include()
#1 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-post-template.php(143): AMP_Post_Template->verify_and_include('/home/sergiala/...', 'single')
#2 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-post-template.php(137): AMP_Post_Template->load_parts(Array)
#3 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/amp.php(87): AMP_Post_Template->load()
#4 /home/sergiala/blog.sergialarconrecio.com/wp-includes/class-wp-hook.php(28 in /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/templates/design-manager/swift/single.php on line 192
[28-Aug-2018 09:13:30 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function ampforwp_related_post_loop_query() in /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/templates/design-manager/swift/single.php:192
Stack trace:
#0 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-post-template.php(444): include()
#1 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-post-template.php(143): AMP_Post_Template->verify_and_include('/home/sergiala/...', 'single')
#2 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-post-template.php(137): AMP_Post_Template->load_parts(Array)
#3 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/amp.php(87): AMP_Post_Template->load()
#4 /home/sergiala/blog.sergialarconrecio.com/wp-includes/class-wp-hook.php(28 in /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/templates/design-manager/swift/single.php on line 192
[28-Aug-2018 10:54:22 UTC] PHP Fatal error:  Uncaught Error: Call to undefined function ampforwp_related_post_loop_query() in /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/templates/design-manager/swift/single.php:192
Stack trace:
#0 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-post-template.php(444): include()
#1 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-post-template.php(143): AMP_Post_Template->verify_and_include('/home/sergiala/...', 'single')
#2 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/class-amp-post-template.php(137): AMP_Post_Template->load_parts(Array)
#3 /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/amp.php(87): AMP_Post_Template->load()
#4 /home/sergiala/blog.sergialarconrecio.com/wp-includes/class-wp-hook.php(28 in /home/sergiala/blog.sergialarconrecio.com/wp-content/plugins/accelerated-mobile-pages/templates/design-manager/swift/single.php on line 192

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