FYI: A bit late in my response but I figured out the problem and hopefully this could help others with a similar problem:
Change Image Editor Library Used by WordPress
WordPress runs on PHP which uses two modules to handle images. These modules are called GD Library and Imagick. WordPress may use either one of them depending on which one is available.
However, Imagick is known to often run into memory issues causing the HTTP error during image uploads. To fix this, you can make the GD Library your default image editor.
You can do this by simply adding this code to your theme’s functions.php file or a site-specific plugin.
function wpb_image_editor_default_to_gd( $editors ) {
$gd_editor = ‘WP_Image_Editor_GD’;
$editors = array_diff( $editors, array( $gd_editor ) );
array_unshift( $editors, $gd_editor );
return $editors;
}
add_filter( ‘wp_image_editors’, ‘wpb_image_editor_default_to_gd’ );
$editors = array_diff( $editors, array( $gd_editor ) );
array_unshift( $editors, $gd_editor );
return $editors;
}
add_filter( ‘wp_image_editors’, ‘wpb_image_editor_default_to_gd’ );
After adding this code, you can retry uploading files using the media uploader. If this doesn’t solve the issue, then you can remove this code and try other methods described in this article.
Using The .htaccess Method
This method allows you to control how Imagick uses server resources. Many shared hosting providers limit Imagick’s ability to use multiple threads for faster image processing. However, this would result in you seeing the HTTP error when uploading images.
An easy fix is to add the following code in your .htaccess file:
1
SetEnv MAGICK_THREAD_LIMIT 1
This code simply limits Imagick to use a single thread to process images.
We hope this article helped you fix the HTTP error during media upload in WordPress. You may also want to see our WordPress troubleshooting guide as well as the ultimate list of most common WordPress errors and how to fix them.
