Title: PHP Compatibility Check Reports Error
Last modified: August 23, 2025

---

# PHP Compatibility Check Reports Error

 *  Resolved [Murray Neilson](https://wordpress.org/support/users/mneilson/)
 * (@mneilson)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-compatibility-check-reports-error/)
 * I have run a compatibility check to see if my system is compatible with PHP 8.0
   and I get the following message on both the Theme and one plugin:
 * > Response status: 400
   > Message: Request has validation errors
   > The audit project slug must be an alpha-numeric string, dashes are allowed.
 * What does this message mean? Where do I find the audit project slug, and how 
   do I fix the issue?

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Moderator [threadi](https://wordpress.org/support/users/threadi/)
 * (@threadi)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-compatibility-check-reports-error/#post-18610676)
 * I suspect the message comes from the compatibility check you performed. How did
   you do that? Which plugin do you use for that?
 *  Thread Starter [Murray Neilson](https://wordpress.org/support/users/mneilson/)
 * (@mneilson)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-compatibility-check-reports-error/#post-18610681)
 * The plugin I used is **PHP Compatibility Checker**
 *  Moderator [threadi](https://wordpress.org/support/users/threadi/)
 * (@threadi)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-compatibility-check-reports-error/#post-18610759)
 * Then I would recommend contacting their support forum if you have any questions
   about the error message: [https://wordpress.org/support/plugin/plugin-compatibility-checker/](https://wordpress.org/support/plugin/plugin-compatibility-checker/)
 *  [sayfrndship](https://wordpress.org/support/users/sayfrndship/)
 * (@sayfrndship)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-compatibility-check-reports-error/#post-18610771)
 * Ok I reply for fixes
   **Check the project name you entered** : If you typed something
   like `My Project #1`, change it to `my-project-1`.
 * **If you didn’t enter a name manually**: The plugin might be using your site 
   name as the slug.
    - Go to **Settings → General** in WordPress and check your **Site Title** — 
      if it has special characters, try simplifying it temporarily to only letters/
      numbers/dashes, then re-run the scan.
 * **Update or reinstall the plugin**
 *  Thread Starter [Murray Neilson](https://wordpress.org/support/users/mneilson/)
 * (@mneilson)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-compatibility-check-reports-error/#post-18610798)
 * Thanks for your help. I have transferred the issue to the suggested forum
 *  Thread Starter [Murray Neilson](https://wordpress.org/support/users/mneilson/)
 * (@mneilson)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-compatibility-check-reports-error/#post-18610947)
 * My question still stands – where or how do I find the project name?
 *  Moderator [threadi](https://wordpress.org/support/users/threadi/)
 * (@threadi)
 * [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-compatibility-check-reports-error/#post-18611070)
 * Unfortunately, I don’t know what the plugin you are using means by “audit project
   slug.” If it refers to the plugin slug, then it is, for example, `plugin-compatibility-
   checker` for the plugin “PHP Compatibility Checker”. In other words, it is what
   you see in the URL of the plugin page. Only their support forum can provide you
   with more detailed information.

Viewing 7 replies - 1 through 7 (of 7 total)

The topic ‘PHP Compatibility Check Reports Error’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 8 replies
 * 3 participants
 * Last reply from: [threadi](https://wordpress.org/support/users/threadi/)
 * Last activity: [9 months, 2 weeks ago](https://wordpress.org/support/topic/php-compatibility-check-reports-error/#post-18611070)
 * Status: resolved

## Topics

### Topics with no replies

### Non-support topics

### Resolved topics

### Unresolved topics

### All topics