W3 Total Cache
[closed] Recently an error occurred while creating the CSS / JS minify cache (26 posts)

  1. harrisbueller
    Posted 2 years ago #

    I'm frequently getting this error that has been reported a year or two ago, I wanted to bring it up and see if anyone has a resolution? The threads on this issue are old and closed and state it was to be fixed in a new version. I'm running the latest, 0.9.3 of WTC.

    "Recently an error occurred while creating the CSS / JS minify cache: A group configuration for "include-body" was not set. "




  2. hypergolica
    Posted 2 years ago #

    I too am getting the same error. And I too noticed that old threads said the problem was fixed in the "new version." Not true.

    Can anyone help?

    Many thanks.



  3. The Odd Duck
    Posted 2 years ago #

    Indeed I have this problem also (it also causes errors with google): http://wordpress.org/support/topic/minify-errorinternal-server-error-500?replies=1

    I have had no replies in 5 days but I have another thread (which I pretty much resolved myself) from over 4 weeks ago that hasn't had any responses

    Do the Devs of W3 not care about their customers?
    Poor service at free level will not inspire me to pay for the premium support, quite the opposite... all it will achieve is me looking for another plugin.

    From other sites where I have been trying to resolve the problem a lot of people say "Switch to Varnish"

  4. guyapi
    Posted 2 years ago #

    I get this error when I uninstalled a plugin that was used before. It's been that way for 2 months but I ignore it because it still works the way it does.

    Recently an error occurred while creating the CSS / JS minify cache: File "/var/www/vhosts/site.com/httpdocs/wp-content/plugins/mini-twitter-feed/minitwitter.css" doesn't exist.

    I'm guessing you have to use paid support to get this resolved.

  5. hypergolica
    Posted 2 years ago #

    The Odd Duck,

    Did you switch to Varnish? If so, did that fix it?

    I had turned of the "Enable Minify" then reactivated... I thought that had solved the problem, but the error message is back again.



  6. The Odd Duck
    Posted 2 years ago #

    I didn't switch to varnish because when i looked at the plugin it said it was only compatible up to 3.5.2

    I might try it out on my other blog that currently has no caching at all though.

  7. jryanjp
    Posted 2 years ago #

    I've paid for the PRO version only to find out that it doesn't come with support. I tried to report this same bug (which apparently has been happening for years) but even their trouble ticket site has a bug! I couldn't report it.
    So, what did I pay for PRO support for???

  8. hypergolica
    Posted 2 years ago #

    Despite having turned off both the minify for the JSS and the CSS, I am still getting the error.


    So if we can't seem to get any support from the makers of W3 Total Cache, can we start a list of alternatives? Does anyone have a recommendation on the best javascript minify plugin?

  9. greencode
    Posted 2 years ago #

    Me too. I run a number of sites and it only appears on a few of them. No idea what the issue is though as I can't see any way of finding out further information.

  10. leslie1019wp
    Posted 2 years ago #

    I get it every once in a while. Sometimes the cache hiccups. It can be a goofy bug. Is your site working properly? Any white screens of death? Any logged errors? Anything broken?

    Here's some settings I would recommend if you are going to use minify. Set properly, it can make a site load faster with caching and a CDN in place. (I use Google PSS for CDN.)

    General Settings-
    Minify: Enabled
    Mode: Manual (Auto can be way too aggressive for many.)
    Cache: select yours (I have APC installed and use it.)
    HTML minifier: default
    JS minifier: JSmin (default)
    CSS minifier: default
    Save the settings.
    Clear page Cache.

    Under Minify-
    Rewrite URL structure- checked
    Disable for logged in users- checked
    HTML & XML section-
    HTML: check only the following
    Inline JS
    Line Break Removal
    Ignored comment stems:
    Save the settings.
    Clear Page Cache.

    Under JS- (now, I had to play with these,but what follows is the best practice)
    Enable- checked
    Under Operations:
    Before- minify- non blocking using Async
    After- minify- non blocking using Async
    Before- minify- non blocking using Async
    JS file management- make sure your theme is selected
    Save the settings.
    Clear Page Cache.

    Under CSS-
    Line break removal- check
    Preserved comment- check
    @import handling- none (you don't want anything else but this.)
    CSS file management- make sure your theme is selected
    Save the settings
    Clear Page Cache

    Update external files: 86400 seconds

    Save the settings.
    Clear page cache.

    Test your site as you make these changes being sure to hit Cntl F% for a hard refresh to rebuild cache.

    If you find one group that doesn't seem to work right, turn off all the options under Minify and test them one at time turning them back on until you find the one causing an issue.

    This is what I did and am successfully using Minify now.

    For the first 24 hours you may see that goofy minify bug while the cache is building.

  11. The Odd Duck
    Posted 2 years ago #

    I'll have a play later...

    nothing on the site is broken, it just seems to be that google cannot render the pages properly and returns a 500 internal server error

    I will take a look at what you have suggested though...

    I still think it is disgusting that there is no support offered by the plugin makers
    Especially for the dude that paid for the pro version!

  12. leslie1019wp
    Posted 2 years ago #

    It's not Google. It's the sql server. Turn off database caching for starters and test it. :) Caching a relational database can cause 500 range errors.

    Hit me back and let me know.

  13. jryanjp
    Posted 2 years ago #

    Thanks for the suggestion @leslie1019wp.

    Unfortunately DB caching was already turned off long ago and I'm still getting the errors.

  14. The Odd Duck
    Posted 2 years ago #

    At work at the mo so I will have to try that later.

    so even though humans do not experience the 500 internal server errors - google does because of the database caching and is completely unrelated to the minify issue?

    so let me get this straight

    The database caching causes issues with google
    The minify thing not working is unrelated

    I still have to try out all the suggestions above, I have been rather busy the last few days though..

  15. hypergolica
    Posted 2 years ago #

    I just want to let everyone know that I've deactivated the W3 Total Cache and the website is loading faster than before.

  16. jryanjp
    Posted 2 years ago #

    Yes, this plugin is seeming more and more like a scam to me. When I bought the PRO version, I immediately got an email offer to "optimize" my site for $250. Later, when I complained about the bugs (which I had to do by choosing "Request a Quote" in their online contact form since they don't respond otherwise) they told me that the PRO version does not include support. They then again offered to "optimize" my site for $250.

    I'm going to try disabling it to see if there's any difference in page load speed.

  17. jryanjp
    Posted 2 years ago #

    Also, they told me that no one monitors these support forums. They just ignore them.

  18. The Odd Duck
    Posted 2 years ago #


    Is there any way we can "report" the plugin and the owners.

    To me it sounds like they are bad business men.
    It is a wordpress plugin on the wordpress site and they don't monitor the support

    They also don't respond to support from PRO members.

    what a bunch of bad vibe merchants.

  19. jryanjp
    Posted 2 years ago #

    I would LOVE to report them! Their response when I asked for support was that I should take them up on their offer to "optimize" my site for $200. When I said their code had a bug and I wanted them to fix it they stopped responding to me!

  20. JochenT
    Posted 2 years ago #

    Sorry guys. This is by far the best and comprehensive caching plugin you can get for WP. Truly it is a very complex application and requires professional knowledge of the background and a lot of time to use all the options properly to get an optimized result. I use it with no problems and get a vast boost of my page load times.

    If you look into the code you see the enormous amount of work which has been invested in this plugin. These guys spend there resources in improving and extending this plugin and I am happy about this.

    Surely it is difficult to get used with it at the beginning and you have to spend a lot of time researching in the web and will need a test server for experimenting. Especially the minifying feature is sensitive. Just one update of another plugin (which changes the file names or content of it's js or css files) may result in white pages. I've made this experience, too.

    If you want to get the last out of your installation you have to deal with such kind of problems. But you have not to do. Simply disable minifying. This will cost you only some percent of load speed but avoids many potential problems. Important is the page cache and the browser cache.

    Object caching and database caching are used best if APC or memcached is available. If you base on disk caching it might be better not to use this. Also database caching should be thought carefully. There are many cases where it is useless or contra productive. It is useful if the DB is placed on an external server and the MySQL cache is disabled. It is contra productive if the DB is on the same server, the MySQL cache is enabled and only one or two posts are published per day.

    Also a CDN gives only some percent. This feature is a bit hyped by the CDN providers.

    Buying the pro version does not mean you get a helping hand for the free features, but more advanced features which probably need more background knowledge to use them right.

  21. jryanjp
    Posted 2 years ago #


    No one is looking for "a helping hand".

    Hundreds of users are experiencing the same BUG in W3TC. We have all tried to get the developers to address this BUG. We are not looking for help in setting up the plugin, we are not looking for "a helping hand with the free features." We are looking for the developers to FIX A BUG.

    If I pay for software and it has a bug, the developers must fix that bug. Period.

    The good news is that (perhaps due to this bad publicity) one of the W3TC engineers has contacted me about the bug. I've given him access to my site so perhaps we'll see a fix for this bug soon. Since it's clearly affecting hundreds of users (do a Google search and you'll see) let's hope they find a fix!

  22. jryanjp
    Posted 2 years ago #

    OK, so the developers finally got back to me. Here is their response.

    "This error simply suggests that something has changed since minify was initially configured. Specifically, that the file in question no longer exists.

    Future releases will improve the handling of this but for all practical purposes, this is merely a cosmetic annoyance and can be ignored. If you don't want to see it, select "Disabled" from the Minify error notification dropdown menu."

    So, we can ignore these errors. The W3TC guys could have saved themselves a lot of bad-will by simply posting that answeer here themselves 2 months ago.

  23. leslie1019wp
    Posted 2 years ago #

    Frederick has said many times to ignore it. It's not a problem. I ignore it. It means nothing.

    Paying for Pro version doesn't get a person support. There are options for that, though, which can be accessed from the installed plugin on the admin side of your site.

    I don't use it b'c I just take my time and work through the settings.

  24. jryanjp
    Posted 2 years ago #

    I think it depends on how you define "support". If you are looking for help in configuring or optimizing then I agree with you, you should pay extra for that.

    However, if you run into a BUG in their software and need a fix, you should NOT have to pay for that if you've already paid for PRO. When you buy a software product, the product should work and if it doesn't, the vendor should fix it.

  25. Foxhounds
    Posted 2 years ago #

    Recently an error occurred while creating the CSS / JS minify cache is just a bug. Just ignore this notification regarding all notifications that are connected to the one above.

  26. marknoll
    Posted 2 years ago #

    How can you turn off notifications for just that error. I have email notifications for errors in case anything does go wrong, which is often with this plugin. How can you disable notifications for just this one error?

    And YES, they should fix it. A BUG is an error with the software and we should not have to pay for pro service to get it fixed.

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