# Errors trying to save config (2.0)

**URL:** <https://forum.mautic.org/t/errors-trying-to-save-config-2-0/3876>\
**Category:** Product Support\
**Created:** [July 10, 2016, 12:54pm UTC](https://forum.mautic.org/t/errors-trying-to-save-config-2-0/3876 "2016-07-10T12:54:39Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![DerekBuntin](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/derekbuntin/32/90_2.png) [@DerekBuntin](https://forum.mautic.org/u/DerekBuntin)\
**Post date:** [July 10, 2016, 12:54pm UTC](https://forum.mautic.org/t/errors-trying-to-save-config-2-0/3876/1 "2016-07-10T12:54:39Z")

</div>

I Tried updating to version 2.0 from 1.4.1 but it did not work, so I installed a fresh version but get the following errors when trying to save the config screen:

Code:

Fatal error: Uncaught SymfonyComponentDebugExceptionUndefinedMethodException: Attempted to call an undefined method named "" of class "SymfonyBundleFrameworkBundleTemplatingHelperSessionHelper". in /home/adonisme/marketing/app/bundles/CoreBundle/Views/Notification/flash\_messages.html.php:21 Stack trace: #0 /home/adonisme/marketing/app/cache/prod/classes.php(942): require() #1 /home/adonisme/marketing/app/cache/prod/classes.php(900): SymfonyComponentTemplatingPhpEngine-\>evaluate() #2 /home/adonisme/marketing/app/bundles/CoreBundle/Views/Notification/flashes.html.php(17): SymfonyComponentTemplatingPhpEngine-\>render('MauticCoreBundl...', Array) #3 /home/adonisme/marketing/app/cache/prod/classes.php(942): require('/home/adonisme/...') #4 /home/adonisme/marketing/app/cache/prod/classes.php(900): SymfonyComponentTemplatingPhpEngine-\>evaluate() #5 /home/adonisme/marketing/app/bundles/CoreBundle/Views/Default/slim.html.php(16): SymfonyComponentTemplatingPhpEngine-\>render('MauticCoreBundl...', Array) #6 /home in /home/adonisme/marketing/app/bundles/CoreBundle/Views/Notification/flash\_messages.html.php on line 21

  
It looks like there are class names missing, any ideas?  
  
Thanks  
  
Derek

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<div class="post-metadata">

**Author:** ![DerekBuntin](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/derekbuntin/32/90_2.png) [@DerekBuntin](https://forum.mautic.org/u/DerekBuntin)\
**Post date:** [July 11, 2016, 5:40pm UTC](https://forum.mautic.org/t/errors-trying-to-save-config-2-0/3876/2 "2016-07-11T17:40:25Z")

</div>

I had the system PHP version as 7.0.8 and downgraded back to 5.6.23, which seem to allow it to work again.

I thought with version 2.0 it would be php 7 compatible?

Thanks  
Derek

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<div class="post-metadata">

**Author:** ![escopecz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/escopecz/32/370_2.png) [@escopecz](https://forum.mautic.org/u/escopecz)\
**Post date:** [July 11, 2016, 12:23pm UTC](https://forum.mautic.org/t/errors-trying-to-save-config-2-0/3876/3 "2016-07-11T12:23:07Z")

</div>

Try to clear your cache (remove the app/cache dir)

---

<div class="post-metadata">

**Author:** ![DerekBuntin](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/derekbuntin/32/90_2.png) [@DerekBuntin](https://forum.mautic.org/u/DerekBuntin)\
**Post date:** [July 10, 2016, 12:54pm UTC](https://forum.mautic.org/t/errors-trying-to-save-config-2-0/3876/4 "2016-07-10T12:54:39Z")

</div>

I Tried updating to version 2.0 from 1.4.1 but it did not work, so I installed a fresh version but get the following errors when trying to save the config screen:

```auto
Fatal error: Uncaught SymfonyComponentDebugExceptionUndefinedMethodException: Attempted to call an undefined method named "" of class "SymfonyBundleFrameworkBundleTemplatingHelperSessionHelper". in /home/adonisme/marketing/app/bundles/CoreBundle/Views/Notification/flash_messages.html.php:21 Stack trace: #0 /home/adonisme/marketing/app/cache/prod/classes.php(942): require() #1 /home/adonisme/marketing/app/cache/prod/classes.php(900): SymfonyComponentTemplatingPhpEngine->evaluate() #2 /home/adonisme/marketing/app/bundles/CoreBundle/Views/Notification/flashes.html.php(17): SymfonyComponentTemplatingPhpEngine->render('MauticCoreBundl...', Array) #3 /home/adonisme/marketing/app/cache/prod/classes.php(942): require('/home/adonisme/...') #4 /home/adonisme/marketing/app/cache/prod/classes.php(900): SymfonyComponentTemplatingPhpEngine->evaluate() #5 /home/adonisme/marketing/app/bundles/CoreBundle/Views/Default/slim.html.php(16): SymfonyComponentTemplatingPhpEngine->render('MauticCoreBundl...', Array) #6 /home in /home/adonisme/marketing/app/bundles/CoreBundle/Views/Notification/flash_messages.html.php on line 21
```

It looks like there are class names missing, any ideas?

Thanks

Derek