In this guide, we’re going to highlight some of the possible causes that can cause Drupal 6 and http 0. / filefield / ahah errors to appear, and then I’ll provide some possible fixes that you can try to resolve this issue.

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    After spending most of the day doing this, and this is one of the many annoying problems I’ve encountered in Drupal, I thought I’d write a better list of fixes for this field of the AHAH file “L ‘HTTP error 0 occured in relation to this might help someone else. There are many suggestions on, but it takes a lot of relevant research to get them from all people.

    drupal 6 an http error 0 occurred. /filefield/ahah

    My config: Drupal 6.22 in Seven administration theme, PHP 5.3.5, Apache runs on CentOS. I use the following image and file modules: ImageAPI 6.x-1.10, Filefield 6.x-3.10, ImageField 6.x-3.10, Filefield Paths 6.x-1.4.

    Check Your Scripts

    I put this topic first, because, how muchto me it must have been the cause of the problem. My opinion changed again – I only set up the servers, but also enabled some javascript preloaders on the website. The JavaScript for the download niche (if you are looking at the source code on a specific page) is a variable in each admin theme page.tpl.php. The and my were variables, both included in every heading of the document. I moved them earlier to handle the body tag correctly, and then this particular script, and loaded the styles without error.

    EDIT: This was not a long term issue. It was the JavaScript preloader that completely ruined the Drupal AHAH script! Caching issues prevented playing with the background 🙂

    Disable Javascript In Browser And Plugins

    Disabling JavaScript is a quick and obvious solution to the problem you are facing, as it will prevent JavaScript from running on the web page and the error will not be displayed. The next step is to help you deactivate all plugins on your mobile phone. When p If the problem is resolved, authorize each plug-in separately and perform additional testing to find out what the problem is. This was a problem when some people were using different windows on different operating systems.

    Update The File During Image-Module

    In some older versions of most of the filefield modules, the location of the AHAH was commented out, not sure, but the first thing to check is why you should usually update your modules to newer versions.

    ImageAPI –
    Filefield –
    Filefield Paths (probably not a problem, but the best practical module) –
    Image field –

    Also make sure that the file and folder permissions in your Sites / default / files directory are legal.

    Refresh Jquery

    Install jquery, the main updater to upgrade to this new version of jquery – If that doesn’t fix the problem, it’s probably best to disable that precious one as it could cause problems elsewhere.

    Check Download Limits

    This was not the source of the problem for me, although you should still tweak it if you have no problem. Setting the post and upload sizes will maximize the upload file size, which you will definitely see when creating the image and even the file panel in CCK. If any limits are too small, increase the post_max_size and upload_max_filesize values ​​to whatever your entire family needs. Increasing memory_limit increases max_execution_time for better rendering and styling, lengthens the password entry process for scripts, and can fix many related WSOD errors.

    In Your Php.ini, Improve Or Change:

    post_max_size 2Mupload_max_filesize 2 Мmemory_limit 96Mmax_execution_time 120

    OR Although You Don’t Need Php.ini Access, Add Your .htaccess:

    php_value post_max_size upload_max_filesize 2Mphp_value 2Mphp_value memory_limit 96Mphp_value max_execution_time 120

    Check FastCGI Configuration

    There is a MaxRequestLen estimate that can be set when using PHP as FastCGI in:


    drupal 6 an http error 0 occurred. /filefield/ahah

    You can see that this has been adjustedabout up to 128KB, change this to for example a much larger task. B. 15 MB:

    MaxRequestlen 15728640

    Install ImageMagick

    SSH into your server and run the following commands to set ImageMagick to handle images instead of linking them to PHP built into GD2. ImageMagick-6.7.2-9 is the latest version if you write Visit and check the latest version. Keep it available as ImageMagick-6.7.2-9 as I installed it and know it will work.


    resin xvfz ImageMagick-6.7.2-9.tar.gz

    CD ImageMagick-6.7.2-9



    deploy sudo install

    sudo ldconfig / usr / local / lib

    Write a check

    Next, plan to go to Drupal admin / admin / settings / imageapi and set the image toolbar as Image Magick. I also had the fact that I could customize and set the main path to convert the binary, like this:

    / usr / local / bin / convert

    There may have been open_basedir errors and PHP was able to connect to the / usr / local / bin / convert directory. Find the Business conf folder in the Host Essential folder:

    var / www / vhosts / / conf


    php_admin_value open_basedir /var/www/vhosts/ include_path /var/www/vhosts/


    If you have any other solutions to this problem that are no younger than the ones listed above, please download the details in the comments.

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