Web Tag Monitoring can log an error in your Developer Console when an error linked to GTM is triggered on your site. This uses Google Tag Manager's native Debug Mode Variable, which will only log errors when not in Google Tag Manager's Preview Mode.
If you're using Elevar's pre-built web tags, you simply need to turn on the monitoring following these steps.
Elevar's pre-built web tags are already wrapped in the error monitoring setup, but the monitoring is turned off by default. To turn on the monitoring, follow the below steps:
Navigate to Tags > Find and select the Elevar Monitoring Core Tag.
Under Debug Mode Variable, set the input to "true". Note: you could also set the value to "1".
Be sure to save your changes!
Press Submit > then Publish!
Now, when you navigate your website, if an Elevar tag has an error, this will be logged in your Developer Console like the below.
Updated about 1 month ago