Title: Import stuck, Javascript error 500
Last modified: August 7, 2023

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# Import stuck, Javascript error 500

 *  Resolved [Anne-Laure](https://wordpress.org/support/users/dionysiaque/)
 * (@dionysiaque)
 * [2 years, 10 months ago](https://wordpress.org/support/topic/import-stuck-javascript-error-500/)
 * Hello,
 * I am trying to import a backup file but the import is stuck at the “Extension
   compatibility check” message.
 * I followed the instruction on that topic : [https://wordpress.org/support/topic/uploading-a-file-stuck-at-100-what-to-do/](https://wordpress.org/support/topic/uploading-a-file-stuck-at-100-what-to-do/)
 * The javascript console displays the following error as soon as the “Extension
   compatibility check” message appears :
 * _Failed to load resource: the server responded with a status of 500 ()_
   _[https://dionysiaque.fr/wp-admin/admin-ajax.php?action=ailwm\_import&ai1wm\_import=1](https://dionysiaque.fr/wp-admin/admin-ajax.php?action=ailwm_import&ai1wm_import=1)_
 * Another line with that error is displayed in the console every few seconds.
 * As advised in many threads, I edited the php.ini file to adjusted the php settings:
    - `upload_max_filesize` – set this to a value > than your backup
    - `post_max_size` – set this to a value > than your backup
    - `memory_limit` – set this to a value > than your backup
    - `max_execution_time` – set this to 0 (infinite)
 * As far as the upload size limit is concerned, I was able to change to it that
   way before (The size of my website is about 700MB so I set it to 1024MB, as by
   default the limit is set to 128 MB). Nevertheless, it has no effect on the upload
   size limit now. I have to use a plugin to increase the limit.
 * Thank you for your help.

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [Anne-Laure](https://wordpress.org/support/users/dionysiaque/)
 * (@dionysiaque)
 * [2 years, 10 months ago](https://wordpress.org/support/topic/import-stuck-javascript-error-500/#post-16956622)
 * I deactivated each plugin one after the other and tried to import the backup 
   file each time. The issue is still there.
 * I tried to start over with a blank web space, install WordPress, All-in-One WP
   Migration plugin and then import a backup file…. another error.
 * _“Unable to open file for reading. File: …”_
    -  This reply was modified 2 years, 10 months ago by [Anne-Laure](https://wordpress.org/support/users/dionysiaque/).
 *  Plugin Author [Yani](https://wordpress.org/support/users/yaniiliev/)
 * (@yaniiliev)
 * [2 years, 8 months ago](https://wordpress.org/support/topic/import-stuck-javascript-error-500/#post-17121187)
 * The upload functionality of the All-in-One WP Migration plugin depends on your
   server’s settings. If you’re encountering difficulties with the upload, it’s 
   due to server restrictions, such as PHP memory limit, execution time, or upload
   size limit. These limitations are not imposed by our plugin, but are parameters
   set by your hosting provider.
 * Many hosting providers set limits on file upload sizes, typically ranging from
   50MB to 2GB. While some of these are soft limits that can be increased upon request,
   others are hard limits that cannot be altered. Unfortunately, these restrictions
   can present challenges when migrating larger sites.
 * This is where the Pro version of our plugin comes in. Our Pro version has been
   widely successful as it takes the server configuration out of the equation for
   the user, offering a reliable upload experience, regardless of your server’s 
   upload limit. This has been a game changer for many users dealing with larger
   sites and restricted server settings.
 * If you find that you’re consistently hitting your server’s upload limit, we recommend
   considering the Pro version of our plugin. This could greatly simplify your experience
   and allow you to focus more on your site’s content rather than server configurations.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Import stuck, Javascript error 500’ is closed to new replies.

 * ![](https://ps.w.org/all-in-one-wp-migration/assets/icon-256x256.png?rev=2458334)
 * [All-in-One WP Migration and Backup](https://wordpress.org/plugins/all-in-one-wp-migration/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/all-in-one-wp-migration/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/all-in-one-wp-migration/)
 * [Active Topics](https://wordpress.org/support/plugin/all-in-one-wp-migration/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/all-in-one-wp-migration/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/all-in-one-wp-migration/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [Yani](https://wordpress.org/support/users/yaniiliev/)
 * Last activity: [2 years, 8 months ago](https://wordpress.org/support/topic/import-stuck-javascript-error-500/#post-17121187)
 * Status: resolved