# Mautic PHP Configuration Error Message

**URL:** <https://forum.mautic.org/t/mautic-php-configuration-error-message/28450>\
**Category:** Mautic 4 Install/Upgrade Support\
**Tags:** community\
**Created:** [June 27, 2023, 8:28pm UTC](https://forum.mautic.org/t/mautic-php-configuration-error-message/28450 "2023-06-27T20:28:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![team](https://avatars.discourse-cdn.com/v4/letter/t/b5a626/32.png) [@team](https://forum.mautic.org/u/team)\
**Post date:** [June 27, 2023, 8:28pm UTC](https://forum.mautic.org/t/mautic-php-configuration-error-message/28450/1 "2023-06-27T20:28:38Z")

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Hi, everyone,

\*\* **Apache 2.4**  
**My Mautic version is: 45\_mautic-449**  
**My PHP version is: PHP 8.0**  
**My Database type and version is: MySQL 8.0**

**Mautic PHP Configuration Error Message**  
_[mautic.cfored.com](http://mautic.cfored.com) shows an HTTP 500 error:_

_These errors are showing in the Bash Trace log_ :

[27-Jun-2023 18:51:14 UTC] PHP Fatal error: Uncaught Error: Class “Mautic\CoreBundle\ErrorHandler\ErrorHandler” not found in /home/admin6/public\_html/mautic/index.php:22

See the captured screenshot image:

![image](https://us1.discourse-cdn.com/flex020/uploads/mautic/original/2X/0/0437700a9dade4071c12a7ef745d75b04d324c80.png)

Stack trace log:  
#0 {main}  
thrown in /home/admin6/public\_html/mautic/index.php on line 22

**We have a Mautic configuration error message: index.php on line 22**

The URL link is here, [https://mautic.cfored.com](https://mautic.cfored.com)

gist link to the index.php file, [Mautic Index Page PHP · GitHub](https://gist.github.com/DevCEDTeam/d93c48dafa7aae94897bc90504c51372)

_Resolution_ :  
_Remove the error code to load the Mautic dashboard_

_Steps I have tried to fix the problem_ :

Reinstall Mautic package

Thanks,  
Hal

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<div class="post-metadata">

**Author:** ![team](https://avatars.discourse-cdn.com/v4/letter/t/b5a626/32.png) [@team](https://forum.mautic.org/u/team)\
**Post date:** [July 2, 2023, 5:14pm UTC](https://forum.mautic.org/t/mautic-php-configuration-error-message/28450/2 "2023-07-02T17:14:19Z")

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Our developers traced the Mautic error message to a failed ‘friendsofsymfony/oauth-server-bundle’ plugin. The Error message reads as follows:

Command ‘composer update friendsofsymfony/oauth-server-bundle’ failed with return code o and the following error message:

Loading composer repositories with package information  
Info from [https://repo.packagist.org](https://repo.packagist.org): #StandWithUkraine  
Updating dependencies  
Nothing to modify in lock file  
Installing dependencies from lock file (including require-dev)  
Nothing to install, update or remove  
Package symfony/class-loader is abandoned, you should avoid using it. No replacement was suggested.  
Package symfony/debug is abandoned, you should avoid using it. Use symfony/error-handler instead.  
Package symfony/security is abandoned, you should avoid using it. No replacement was suggested.  
Generating autoload files  
36 packages you are using are looking for funding.  
Use the `composer fund` command to find out more!  
Found 1 security vulnerability advisory affecting 1 package.  
Run composer audit for a full list of advisories.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex020/uploads/mautic/original/1X/43c63600fe51440378769136903f1fa2a9a34102.png) [@system](https://forum.mautic.org/u/system)\
**Post date:** [July 4, 2023, 5:15am UTC](https://forum.mautic.org/t/mautic-php-configuration-error-message/28450/3 "2023-07-04T05:15:08Z")

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