Sending JSON from Campaign Webhook

[jmakar]

Your software
My Mautic version is: 3.3.1
My PHP version is: 7
My Database type and version is: MySQL

Your problem
My problem is:
The release notes for 3.1 say that the issue I’m about to describe was addressed in bug fix #8959

Mautic 3.1: New Beginnings

The Mautic Community have today released Mautic 3.1, the first feature-based update for Mautic 3. This release includes several features that have been contributed by individuals in the community and many that have been contributed by companies such as Acquia, Webmecanik, Pepipost, CTMobi and Monogramm. The release was led by Dennis Ameling. We thank every single contributor and organization that have been involved for their help and support with getting the release to this point. New feature…

Send JSON Webhooks in campaigns when content-type of application/json is included in the header

However, the bug page itself (listed above) has comments that seem to indicate this might not be included until Mautic 4. Can you say for certain if this is addressed in 3.3.1 or not?

The issue I am seeing is what is described in that bug. I create a webhook action in a campaign and set the content-type header to a value of application/json. I set the verb to POST. The body is still sent as if it were form type.

These errors are showing in the log:

Steps I have tried to fix the problem: