Title: MIME type error Last modified: May 10, 2018 --- # MIME type error * Resolved [louiscuvelier](https://wordpress.org/support/users/louiscuvelier/) * (@louiscuvelier) * [8 years ago](https://wordpress.org/support/topic/mime-type-error-2/) * Hi, * I think (not sure) I have a problem with SuperPWA. * On my website in the wp-admin part, I have this type of error : * `Refused to apply style from '...' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.` * `Refused to execute script from '...' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled.` * I arrived at the conclusion that was SuperPWA involved because when I made a « Force update » (on Chrome : CTRL + MAJ + R), there is no error. But, once SuperPWA is active and I reload the page normally, the errors showed up. * Can you help please ? * Best regards, Louis Cuvelier. Viewing 8 replies - 1 through 8 (of 8 total) * [Arun Basil Lal](https://wordpress.org/support/users/arunbasillal/) * (@arunbasillal) * [8 years ago](https://wordpress.org/support/topic/mime-type-error-2/#post-10266947) * Hello Louis, * SuperPWA doesn’t do anything on the WordPress admin and is excluded as you can see here: [https://github.com/SuperPWA/Super-Progressive-Web-Apps/blob/10cd1b7dcf675a8f63a169a6bcb5d29a8c82a31a/public/sw.php#L108](https://github.com/SuperPWA/Super-Progressive-Web-Apps/blob/10cd1b7dcf675a8f63a169a6bcb5d29a8c82a31a/public/sw.php#L108) * A confirmatory test would be to deactivate SuperPWA temporarily and also to remove the service worker installed on your browser. * You can do this by going to Chrome Dev tools > Application tab > Service workers > Unregister > Close tab and reopen or restart browser and see if the error persists. Please note that its very important to restart the tab. * Please let me know how it goes. Best regards. * Thread Starter [louiscuvelier](https://wordpress.org/support/users/louiscuvelier/) * (@louiscuvelier) * [8 years ago](https://wordpress.org/support/topic/mime-type-error-2/#post-10270703) * Hello Arun, * I’m sorry to tell you that when I disable SuperPWA and I clean the SW, It works without any error. 😕 * Best regards - This reply was modified 8 years ago by [louiscuvelier](https://wordpress.org/support/users/louiscuvelier/). - This reply was modified 8 years ago by [louiscuvelier](https://wordpress.org/support/users/louiscuvelier/). * [Arun Basil Lal](https://wordpress.org/support/users/arunbasillal/) * (@arunbasillal) * [8 years ago](https://wordpress.org/support/topic/mime-type-error-2/#post-10272739) * I see, I am wondering why. * How can I replicate this error at my end? What plugins should I use and what should I do? * The browser is latest Chrome I believe. * Thread Starter [louiscuvelier](https://wordpress.org/support/users/louiscuvelier/) * (@louiscuvelier) * [8 years ago](https://wordpress.org/support/topic/mime-type-error-2/#post-10273278) * I’m on Chrome version 66.0.3359.170. * The error is especially annoying when I want to edit a page/post because It put in error the two plugins that I use ThirstyAffiliates ([https://wordpress.org/plugins/thirstyaffiliates/](https://wordpress.org/plugins/thirstyaffiliates/)) and Ad Inserter ([https://wordpress.org/plugins/ad-inserter/](https://wordpress.org/plugins/ad-inserter/)). * I’m also using Autoptimize ([https://wordpress.org/plugins/autoptimize/](https://wordpress.org/plugins/autoptimize/)) and CloudFlare. - This reply was modified 8 years ago by [louiscuvelier](https://wordpress.org/support/users/louiscuvelier/). * [Arun Basil Lal](https://wordpress.org/support/users/arunbasillal/) * (@arunbasillal) * [8 years ago](https://wordpress.org/support/topic/mime-type-error-2/#post-10301619) * Hey Louis, * Sorry I didn’t get a chance to get back to this before. * I noticed this post: [https://wordpress.org/support/topic/refused-to-execute-script-because-its-mime-type-is-not-executable-2/#post-10263396](https://wordpress.org/support/topic/refused-to-execute-script-because-its-mime-type-is-not-executable-2/#post-10263396) * Does that mean now it’s all good? Please let me know. * Thread Starter [louiscuvelier](https://wordpress.org/support/users/louiscuvelier/) * (@louiscuvelier) * [8 years ago](https://wordpress.org/support/topic/mime-type-error-2/#post-10304220) * Hey Arun, * Actually no. I thought It was fixed, but in fact no because the problem come from SuperPWA. * [Arun Basil Lal](https://wordpress.org/support/users/arunbasillal/) * (@arunbasillal) * [7 years, 12 months ago](https://wordpress.org/support/topic/mime-type-error-2/#post-10316109) * I am unfamiliar with this error and based on reading about it online I think its because the content-type of the file is text/html when it should be application/ javascript. * Since SuperPWA does not mess with the content-type, I am not sure what is happening here. * Disabling Cloudflare temporarily didn’t help? Is the rocket loader enabled? * Thread Starter [louiscuvelier](https://wordpress.org/support/users/louiscuvelier/) * (@louiscuvelier) * [7 years, 12 months ago](https://wordpress.org/support/topic/mime-type-error-2/#post-10317528) * I tried with Rocket Loader Off and CloudFlare disabled. Nothing change, I’ve got the same problem … Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘MIME type error’ is closed to new replies. * ![](https://ps.w.org/super-progressive-web-apps/assets/icon-128x128.png?rev=1842063) * [Super Progressive Web Apps](https://wordpress.org/plugins/super-progressive-web-apps/) * [Frequently Asked Questions](https://wordpress.org/plugins/super-progressive-web-apps/#faq) * [Support Threads](https://wordpress.org/support/plugin/super-progressive-web-apps/) * [Active Topics](https://wordpress.org/support/plugin/super-progressive-web-apps/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/super-progressive-web-apps/unresolved/) * [Reviews](https://wordpress.org/support/plugin/super-progressive-web-apps/reviews/) ## Tags * [mime-type](https://wordpress.org/support/topic-tag/mime-type/) * 8 replies * 2 participants * Last reply from: [louiscuvelier](https://wordpress.org/support/users/louiscuvelier/) * Last activity: [7 years, 12 months ago](https://wordpress.org/support/topic/mime-type-error-2/#post-10317528) * Status: resolved