# Log printing with factory-\>getLogger() on mautic 3 Plugin

**URL:** <https://forum.mautic.org/t/log-printing-with-factory-getlogger-on-mautic-3-plugin/19313>\
**Category:** Product Support\
**Tags:** discussion, development, mautic-3\
**Created:** [May 3, 2021, 3:47pm UTC](https://forum.mautic.org/t/log-printing-with-factory-getlogger-on-mautic-3-plugin/19313 "2021-05-03T15:47:16Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![daniel.alves](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/daniel.alves/32/627_2.png) [@daniel.alves](https://forum.mautic.org/u/daniel.alves)\
**Post date:** [May 3, 2021, 3:47pm UTC](https://forum.mautic.org/t/log-printing-with-factory-getlogger-on-mautic-3-plugin/19313/1 "2021-05-03T15:47:16Z")

</div>

**Your software**  
My Mautic version is: 3.3.3  
My PHP version is: 7.3.27-9+ubuntu18.04.1+deb.sury.org+1  
My Database type and version is: MySQLServer 5.7.33-google-log

**Your problem**  
My problem is: Error on printing logs with:  
`$this->factory->getLogger()->log('error', 'TEST: ' . $campaignCategory->getId() . ', CampaignName: ' . $campaignName );`  
On mautic 2 was logging fine, and after the upgrade made upgrade of the external plugin (that works on mautic 3.3.3), but can’t use getLogger() anymore.

These errors are showing in the log:

> mautic.CRITICAL: Uncaught PHP Exception Symfony\Component\Debug\Exception\FatalThrowableError: “Call to a member function getLogger() on null” at /var/www/html/mauticqa2/plugins/MauticTekeverBundle/EventListener/TekeverCampaignSubscriber.php line 117 {“exception”:"[object] (Symfony\Component\Debug\Exception\FatalThrowableError(code: 0): Call to a member function getLogger() on null at /var/www/html/mauticqa2/plugins/MauticTekeverBundle/EventListener/TekeverCampaignSubscriber.php:117)  
> [stacktrace]  
> #0 /var/www/html/mauticqa2/vendor/symfony/event-dispatcher/EventDispatcher.php(214): MauticPlugin\MauticTekeverBundle\EventListener\TekeverCampaignSubscriber-\>onCampaignPostSave(Object(Mautic\CampaignBundle\Event\CampaignEvent), ‘mautic.campaign…’, Object(Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher))  
> #1 /var/www/html/mauticqa2/vendor/symfony/event-dispatcher/EventDispatcher.php(44): Symfony\Component\EventDispatcher\EventDispatcher-\>doDispatch(Array, ‘mautic.campaign…’, Object(Mautic\CampaignBundle\Event\CampaignEvent))  
> #2 /var/www/html/mauticqa2/app/bundles/CampaignBundle/Model/CampaignModel.php(218): Symfony\Component\EventDispatcher\EventDispatcher-\>dispatch(‘mautic.campaign…’, Object(Mautic\CampaignBundle\Event\CampaignEvent))  
> #3 /var/www/html/mauticqa2/app/bundles/CoreBundle/Model/FormModel.php(112): Mautic\CampaignBundle\Model\CampaignModel-\>dispatchEvent(‘post\_save’, Object(Mautic\CampaignBundle\Entity\Campaign), true, Object(Mautic\CampaignBundle\Event\CampaignEvent))  
> #4 /var/www/html/mauticqa2/app/bundles/CoreBundle/Controller/AbstractStandardFormController.php(425): Mautic\CoreBundle\Model\FormModel-\>saveEntity(Object(Mautic\CampaignBundle\Entity\Campaign), true)  
> #5 /var/www/html/mauticqa2/app/bundles/CampaignBundle/Controller/CampaignController.php(161): Mautic\CoreBundle\Controller\AbstractStandardFormController-\>editStandard(‘mautic\_b67c71d8…’, ‘’)  
> #6 /var/www/html/mauticqa2/app/bundles/CoreBundle/Controller/CommonController.php(456): Mautic\CampaignBundle\Controller\CampaignController-\>editAction(‘mautic\_b67c71d8…’, ‘’)  
> #7 /var/www/html/mauticqa2/vendor/symfony/http-kernel/HttpKernel.php(151): Mautic\CoreBundle\Controller\CommonController-\>executeAction(‘edit’, ‘mautic\_b67c71d8…’, 0, ‘’)  
> #8 /var/www/html/mauticqa2/vendor/symfony/http-kernel/HttpKernel.php(68): Symfony\Component\HttpKernel\HttpKernel-\>handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)  
> #9 /var/www/html/mauticqa2/vendor/symfony/http-kernel/Kernel.php(200): Symfony\Component\HttpKernel\HttpKernel-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)  
> #10 /var/www/html/mauticqa2/app/AppKernel.php(104): Symfony\Component\HttpKernel\Kernel-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)  
> #11 /var/www/html/mauticqa2/app/middlewares/CORSMiddleware.php(91): AppKernel-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)  
> #12 /var/www/html/mauticqa2/app/middlewares/CatchExceptionMiddleware.php(43): Mautic\Middleware\CORSMiddleware-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)  
> #13 /var/www/html/mauticqa2/app/middlewares/VersionCheckMiddleware.php(67): Mautic\Middleware\CatchExceptionMiddleware-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)  
> #14 /var/www/html/mauticqa2/app/middlewares/TrustMiddleware.php(51): Mautic\Middleware\VersionCheckMiddleware-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)  
> #15 /var/www/html/mauticqa2/vendor/stack/builder/src/Stack/StackedHttpKernel.php(23): Mautic\Middleware\TrustMiddleware-\>handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)  
> #16 /var/www/html/mauticqa2/vendor/stack/run/src/Stack/run.php(13): Stack\StackedHttpKernel-\>handle(Object(Symfony\Component\HttpFoundation\Request))  
> un(Object(Stack\StackedHttpKernel))p(24): Stack\

Steps I have tried to fix the problem:  
I tried to log with other solutions, but has other errors:  
$logger = $this-\>get(‘monolog.logger.mautic’);  
$logger-\>log(‘error’, 'ERROR tekever: ');

what are the steps to print a simple log in the mautic log file, in mautic v3?