Title: CDN issue Last modified: June 15, 2019 --- # CDN issue * Resolved [theukdirectory](https://wordpress.org/support/users/theukdirectory/) * (@theukdirectory) * [7 years, 1 month ago](https://wordpress.org/support/topic/cdn-issue-7/) * my CSS is being loaded from a CDN. * Non of my amp pages are working when I do this and I get the following error: * The style[amp-custom] element is populated with: 0 B: style[amp-custom=] 73 B (57%): link#amp-default-css[rel=stylesheet][id=amp-default-css][href=https:// sheffield.bigstamp.co.uk/wp-content/plugins/amp/assets/css/amp-default.css?ver =1.1.3][type=text/css][media=all] 34528 B (88%): link#dashicons-css[rel=stylesheet][ id=dashicons-css][href=https://sheffield.bigstamp.co.uk/wp-includes/css/dashicons. min.css?ver=5.2.1][type=text/css][media=all] 223 B (0%): link#bp-nouveau-css[ rel=stylesheet][id=bp-nouveau-css][href=https://sheffield.bigstamp.co.uk/wp-content/ plugins/buddypress/bp-templates/bp-nouveau/css/buddypress.min.css?ver=4.3.0][ type=text/css][media=screen] 1671 B (34%): link#td-plugin-newsletter-css[rel= stylesheet][id=td-plugin-newsletter-css][href=https://sheffield.bigstamp.co.uk/ wp-content/plugins/td-newsletter/style.css?ver=9.7.3][type=text/css][media=all] 2047 B (57%): link#td-theme-amp-css[rel=stylesheet][id=td-theme-amp-css][href =https://sheffield.bigstamp.co.uk/wp-content/plugins/td-composer/mobile/style- amp.css?ver=9.7.3][type=text/css][media=all] 29 B: style[type=text/css] 74 B: h2.amp-wp-b371fd6[class=amp-wp-b371fd6] 97 B: span.amp-wp-dffa517[class=amp-wp- dffa517] 75 B: div.td-author-name vcard author amp-wp-9c76635[class=td-author- name vcard author amp-wp-9c76635] 75 B: p.amp-wp-224b51a[class=amp-wp-224b51a] 93 B: amp-iframe.amp-wp-b3bfe1b[src=https://www.googletagmanager.com/ns.html? id=GTM-TD2R4HW][height=400][sandbox=allow-scripts allow-same-origin][layout=fixed- height][class=amp-wp-b3bfe1b] Total included size: 38,985 bytes (48% of 80,016 total after tree shaking) * The following stylesheets are too large to be included in style[amp-custom]: 25439 B (45%): link#td-theme-css[rel=stylesheet][id=td-theme-css][href=https:// sheffield.bigstamp.co.uk/wp-content/plugins/td-composer/mobile/style.css?ver= 9.7.3][type=text/css][media=all] Total excluded size: 25,439 bytes (45% of 55,892 total after tree shaking) * Total combined size: 64,424 bytes (47% of 135,908 total after tree shaking) * If I don’t serve via the CDN everthing works fine. * I’ve tried a few different plugins to see whether it was an issue with litespeed and i get the same problem with all the other CDN plugins. Viewing 6 replies - 1 through 6 (of 6 total) * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [7 years, 1 month ago](https://wordpress.org/support/topic/cdn-issue-7/#post-11641524) * You should turn off serving CSS from a CDN on AMP pages because the AMP plugin concatenates, minifies, and inlines the CSS into the page. So there is no need for a CSS CDN at all. Are you using a plugin to do the CSS CDN? * Are you Transitional mode or Native mode (soon to be called “Standard”). * Thread Starter [theukdirectory](https://wordpress.org/support/users/theukdirectory/) * (@theukdirectory) * [7 years, 1 month ago](https://wordpress.org/support/topic/cdn-issue-7/#post-11641555) * I’m using transitional mode and Litespeed cache. * I’m not sure how you’d turn it off just for amp pages. * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [7 years, 1 month ago](https://wordpress.org/support/topic/cdn-issue-7/#post-11641673) * To confirm, it is this plugin? [https://wordpress.org/plugins/litespeed-cache/](https://wordpress.org/plugins/litespeed-cache/) * Thread Starter [theukdirectory](https://wordpress.org/support/users/theukdirectory/) * (@theukdirectory) * [7 years, 1 month ago](https://wordpress.org/support/topic/cdn-issue-7/#post-11641681) * Yes, * I’ve also had the same issue with the cdn enabler as well [https://en-gb.wordpress.org/plugins/cdn-enabler/](https://en-gb.wordpress.org/plugins/cdn-enabler/) as I use that currently on another site as I’ve not had time to switch it over to Litespeed yet. * Plugin Author [Weston Ruter](https://wordpress.org/support/users/westonruter/) * (@westonruter) * [7 years, 1 month ago](https://wordpress.org/support/topic/cdn-issue-7/#post-11641907) * For Lightspeed, you can try adding something like this to your custom theme’s` functions.php` or a custom plugin: * ``` add_filter( 'litespeed_can_cdn', function( $can ) { if ( function_exists( 'is_amp_endpoint' ) && is_amp_endpoint() ) { $can = false; } return $can; } ); ``` * Some docs on that here: [https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:cache:lscwp:bypass](https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:cache:lscwp:bypass) * Using `is_amp_endpoint()` may not work properly since I’m not sure if the filter is applied to early. So what you may need to use instead in Transitional mode is this: * ``` add_filter( 'litespeed_can_cdn', function( $can ) { if ( function_exists( 'amp_get_slug' ) && isset( $_GET[ amp_get_slug() ] ) ) { $can = false; } return $can; } ); ``` * There are a bunch of other filters in Lightspeed that you can use to configure its behavior similarly. * Thread Starter [theukdirectory](https://wordpress.org/support/users/theukdirectory/) * (@theukdirectory) * [7 years, 1 month ago](https://wordpress.org/support/topic/cdn-issue-7/#post-11642199) * Many Many Many Thanks! * Your first option seems to have done the trick, I’d have been going round in circles for weeks trying to figure it out. Viewing 6 replies - 1 through 6 (of 6 total) The topic ‘CDN issue’ is closed to new replies. * ![](https://ps.w.org/amp/assets/icon.svg?rev=2527602) * [AMP](https://wordpress.org/plugins/amp/) * [Frequently Asked Questions](https://wordpress.org/plugins/amp/#faq) * [Support Threads](https://wordpress.org/support/plugin/amp/) * [Active Topics](https://wordpress.org/support/plugin/amp/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/amp/unresolved/) * [Reviews](https://wordpress.org/support/plugin/amp/reviews/) * 6 replies * 2 participants * Last reply from: [theukdirectory](https://wordpress.org/support/users/theukdirectory/) * Last activity: [7 years, 1 month ago](https://wordpress.org/support/topic/cdn-issue-7/#post-11642199) * Status: resolved