Title: Some 404s Last modified: August 24, 2016 --- # Some 404s * Resolved [gab81](https://wordpress.org/support/users/gab81/) * (@gab81) * [10 years, 12 months ago](https://wordpress.org/support/topic/some-404s/) * hi there, * i was looking at my 404 logs and i noticed a number of 404s (like 1-4 per day) from auto optimize, which frankly looks a bit odd since it seems to be working fine… for instance i have many 404s with urls such as: * /contentfolder/cache/autoptimize/js/autoptimize_xxxxxxxx.js * anything i could check? * thanks Gab * [https://wordpress.org/plugins/autoptimize/](https://wordpress.org/plugins/autoptimize/) Viewing 15 replies - 1 through 15 (of 28 total) 1 [2](https://wordpress.org/support/topic/some-404s/page/2/?output_format=md) [→](https://wordpress.org/support/topic/some-404s/page/2/?output_format=md) * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [10 years, 12 months ago](https://wordpress.org/support/topic/some-404s/#post-6125027) * the useragent of that request, might very well be googlebot which seems to asynchronously request CSS or JS files. [this thread discusses some more](https://wordpress.org/support/topic/many-404-errors-but-only-from-googlebot?replies=10). * hope this helps, frank * Thread Starter [gab81](https://wordpress.org/support/users/gab81/) * (@gab81) * [10 years, 12 months ago](https://wordpress.org/support/topic/some-404s/#post-6125035) * hi Frank, * I think the 410 gone solution is a good approach, is that difficult to do? * thanks, Gab * Thread Starter [gab81](https://wordpress.org/support/users/gab81/) * (@gab81) * [10 years, 12 months ago](https://wordpress.org/support/topic/some-404s/#post-6125227) * hi Frank, sorry to write you again, can you share with me in PM (if there is here lol) how to enable the 410-gone solution? * thanks, Gab * [ecdltf](https://wordpress.org/support/users/ecdltf/) * (@ecdltf) * [10 years, 12 months ago](https://wordpress.org/support/topic/some-404s/#post-6125230) * I would like to know, too 😉 * Tom * [Handoko](https://wordpress.org/support/users/handoko-zhang/) * (@handoko-zhang) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125311) * [@gab81](https://wordpress.org/support/users/gab81/) & [@ecdltf](https://wordpress.org/support/users/ecdltf/) * It’s not hard, but you need to have basic knowledge of htaccess. Here is the example code that need to added to your .htaccess file * ``` # BEGIN 410 Gone redirect 410 /wp-content/cache/autoptimize/js/autoptimize_xxxxxxxx.js redirect 410 /wp-content/cache/autoptimize/js/autoptimize_12345678.js # END 410 Gone ``` * Change the “/wp-content/cache/…” with the url that causes 404 error. And make sure you have make a backup of the .htacess file. Because **improper configuration in .htacess file can ruin your website** and it’s SEO. * Thread Starter [gab81](https://wordpress.org/support/users/gab81/) * (@gab81) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125314) * Hi there * I know .htaccess tho u dont say if its the root’s .htaccess or the wpcontent cache’s.. i think the root’s right?? * That code requires manual input…..which would require going to check in the log for which .js are now 404s over time i guess…I have different .js files coming up as 404…..i was under the impression that there was a way for this to be dynamic and automatic? * Also i am thinking if google bot and company cannot crawl those .js from autoptimize, since they are -gone- a part from the 404, what is the loss in terms of functionality for the search engine? I mean would that hurt seo in your opinion? I work in seo but i am not great at javascript :). * I was reading an article the other day that gbot now understands more javascript > [http://searchengineland.com/tested-googlebot-crawls-javascript-heres-learned-220157](http://searchengineland.com/tested-googlebot-crawls-javascript-heres-learned-220157) so perhaps something we should be aware of moving forward. * Many thanks Gabrio * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125316) * So, I’m back from my holidays, glad you kids are getting along 😉 * Put something like this (warning: untested) in wp-content/cache/autoptimize/. htaccess: * ``` RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteRule (.*) "-" [G,NC] ``` * If this works, you’ll probably want to update /wp-content/plugins/autoptimize/ classes/autoptimizeCache.php to have that code as well (as autoptimizeCache.php writes .htaccess if not there). * The question of missing JS-files on SEO is a good one, but I have no answer except that in general Google needs to understand JS in order to be able to crawl JS- only sites built in e.g. AngularJS or Ember. * hope this helps, frank * [ecdltf](https://wordpress.org/support/users/ecdltf/) * (@ecdltf) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125321) * Thanks for the experimental .htaccess. * Currently I’m trying the other approach “making sure the files don’t get removed” as you proposed [here](https://wordpress.org/support/topic/many-404-errors-but-only-from-googlebot?replies=10#post-6875005). * I’ve moved out the AO cache folder from the regular cache folder, to avoid that everything gets deleted by WPSC. * Surely Google’s 404s will be avoided this way, but the problem remains that AO’s cache folder will grow ad infinitum. * So, I thought, I will let it grow, let’s say 4 weeks and than start to delete files older than 3 weeks by hand, once per month. This should still greatly reduce Google’s 404s, no? The rest would be covered by the .htaccess 410 entry as above. * But I’m not sure if removing files _by hand_ will not disturb AO in some way? * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125323) * removing files by hand won’t bother AO a bit 🙂 * frank * [Davide Roccato](https://wordpress.org/support/users/davidroccato/) * (@davidroccato) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125324) * I’m following this discussion because I’m getting lots of 404s from AO too. I’m using siteground supercacher plugin. * But I’m not a dev at all to tweak anything inside .htaccess if I’m not 100% sure is not going to break something else. :S * [ecdltf](https://wordpress.org/support/users/ecdltf/) * (@ecdltf) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125325) * > if I’m not 100% sure is not going to break something else. :S * I just copied Frank’s lines into my .htaccess. I’ll let you know if anything goes terribly wrong 🙂 * [Here](https://httpd.apache.org/docs/current/rewrite/flags.html#flag_g) you find some info on what is does. * Thread Starter [gab81](https://wordpress.org/support/users/gab81/) * (@gab81) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125326) * hi Frank, I have just tested it and tried a direct hit from Google Cache and I get: * ``` 410 Gone The requested resource /wp-content/cache/autoptimize/js/autoptimize_xxxxxxxx2595f84404.js is no longer available on this server and there is no forwarding address. Please remove all references to this resource. ``` * so seems to be working 🙂 * I did what you suggested and modded the .htaccess and the autoptimizeCache.php– there’s 2 instances there, right? it says write this code in the .htaccess ELSE write this code, etc.. so needs to be repeated twice, correct? * [@davidroccato](https://wordpress.org/support/users/davidroccato/), is not hard at all, I suggest you to make a backup of the autoptimizeCache.php and the other. htaccess in the wp-content/cache/autoptimize/.htaccess folder. * Thread Starter [gab81](https://wordpress.org/support/users/gab81/) * (@gab81) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125330) * btw I checked the 404 log of one of my plugins with 404 detection and no more 404s from AO, so that’s great….love the 410… GONE! 🙂 * Plugin Author [Frank Goossens](https://wordpress.org/support/users/futtta/) * (@futtta) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125331) * > I did what you suggested and modded the .htaccess and the autoptimizeCache. > php – there’s 2 instances there, right? it says write this code in the .htaccess > ELSE write this code, etc.. so needs to be repeated twice, correct? * correct. * > btw I checked the 404 log of one of my plugins with 404 detection and no more > 404s from AO, so that’s great….love the 410… GONE! 🙂 * I’m doing the happy-dance 😉 * [ecdltf](https://wordpress.org/support/users/ecdltf/) * (@ecdltf) * [10 years, 11 months ago](https://wordpress.org/support/topic/some-404s/#post-6125332) * Keep on dancing! * Me, too, very happy 🙂 * (Using the twofold approach here: AO’s cache moved out of reach of WPSC + rewrite to G) Viewing 15 replies - 1 through 15 (of 28 total) 1 [2](https://wordpress.org/support/topic/some-404s/page/2/?output_format=md) [→](https://wordpress.org/support/topic/some-404s/page/2/?output_format=md) The topic ‘Some 404s’ is closed to new replies. * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608) * [Autoptimize](https://wordpress.org/plugins/autoptimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/autoptimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/autoptimize/) * [Active Topics](https://wordpress.org/support/plugin/autoptimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/autoptimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/autoptimize/reviews/) ## Tags * [404 errors](https://wordpress.org/support/topic-tag/404-errors/) * 28 replies * 7 participants * Last reply from: [Frank Goossens](https://wordpress.org/support/users/futtta/) * Last activity: [10 years, 1 month ago](https://wordpress.org/support/topic/some-404s/page/2/#post-6125603) * Status: resolved