# Listening to Events (CommonSubscriber missing)

**URL:** <https://forum.mautic.org/t/listening-to-events-commonsubscriber-missing/15441>\
**Category:** Product Support\
**Created:** [July 29, 2020, 3:16pm UTC](https://forum.mautic.org/t/listening-to-events-commonsubscriber-missing/15441 "2020-07-29T15:16:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ismaescamillaa](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/ismaescamillaa/32/405_2.png) [@ismaescamillaa](https://forum.mautic.org/u/ismaescamillaa)\
**Post date:** [July 29, 2020, 3:16pm UTC](https://forum.mautic.org/t/listening-to-events-commonsubscriber-missing/15441/1 "2020-07-29T15:16:19Z")

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My Mautic version is: 3.0.1  
My PHP version is: 7.3

My problem is: I tried to listen to events from a custom plugin I developed (based on MauticExtendeeFormTabBundle) the  
class name is InjectCustomContentSubscriber and extends from CommonSubscriber as this is the only example I have from other plugins, to extend CommonSubscriber yet that file is no longer present in Mautic 3 CoreBundle

These errors are showing in the log:  
Class “MauticPlugin\CoreBundle\EventListener\CommonSubscriber” not found while loading “MauticPlugin\PulseEvents  
Bundle\EventListener\InjectCustomContentSubscriber”

Steps I have tried to fix the problem:  
Tried to extend other classes or implement the interface EventSubscriberInterface

No luck, if someone can provide a sample on how to listen for events specially the VIEW\_INJECT\_CUSTOM\_CONTENT from a custom plugin that will be greatly appreciated.

Thank You!

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**Author:** ![pierre\_a](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/pierre_a/32/7031_2.png) [@pierre\_a](https://forum.mautic.org/u/pierre_a)\
**Post date:** [April 25, 2022, 3:59pm UTC](https://forum.mautic.org/t/listening-to-events-commonsubscriber-missing/15441/2 "2022-04-25T15:59:37Z")

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Hello @ismaescamillaa, and welcome!

Can you tell us where you are in your research since your initial post?

Pierre