# Fatal Error on Save Config

**URL:** https://forum.mautic.org/t/fatal-error-on-save-config/6429
**Category:** Product Support
**Created:** [November 3, 2016, 11:23am UTC](https://forum.mautic.org/t/fatal-error-on-save-config/6429 "2016-11-03T11:23:31Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![freshwebservices](https://avatars.discourse-cdn.com/v4/letter/f/5fc32e/32.png) [@freshwebservices](https://forum.mautic.org/u/freshwebservices)
#### Post date: [November 3, 2016, 11:23am UTC](https://forum.mautic.org/t/fatal-error-on-save-config/6429/1 "2016-11-03T11:23:31Z")

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Hi,  
  
When saving edits in Mautic config I get the following error:  
  
PHP Fatal error: Interface ‘SymfonyComponentFormDataTransformerInterface’ not found in /home/…/public\_html/mautic/app/bundles/CoreBundle/Form/DataTransformer/ArrayStringTransformer.php on line 17  
  
  
  
Looking at the directory structure I don’t have the Component subfolder - rather DataTransformerInterface.php is found in mautic/vendor/symfony/form/  
  
Manually adding the missing ‘component’ directory & the file DataTransformerInterface.php to that directory does not resolve the issue.  
  
  
  
ArrayStringTransformer implements use SymfonyComponentFormDataTransformerInterface;  
  
  
  
Any suggestions ?  
  
Thanks,  
  
Eddie

---

<div class="post-metadata">

### Author: ![freshwebservices](https://avatars.discourse-cdn.com/v4/letter/f/5fc32e/32.png) [@freshwebservices](https://forum.mautic.org/u/freshwebservices)
#### Post date: [November 3, 2016, 11:23am UTC](https://forum.mautic.org/t/fatal-error-on-save-config/6429/2 "2016-11-03T11:23:31Z")

</div>

Hi,  
When saving edits in Mautic config I get the following error:  
PHP Fatal error: Interface ‘SymfonyComponentFormDataTransformerInterface’ not found in /home/…/public\_html/mautic/app/bundles/CoreBundle/Form/DataTransformer/ArrayStringTransformer.php on line 17

Looking at the directory structure I don’t have the Component subfolder - rather DataTransformerInterface.php is found in mautic/vendor/symfony/form/  
Manually adding the missing ‘component’ directory & the file DataTransformerInterface.php to that directory does not resolve the issue.

ArrayStringTransformer implements use SymfonyComponentFormDataTransformerInterface;

Any suggestions ?  
Thanks,  
Eddie