Critical Error

Maya

December 04, 2025 05:01

PHP Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, first array member is not a valid class name or object in /home/1161951.cloudwaysapps.com/fcbqdsypjk/public_html/wp-includes/rest-api/class-wp-rest-server.php:1625

Hello, I have been contacted by my host that the Grow plugin is causing some serious issues.

This error is causing the site to malfunction, and is affecting the functionality of several WordPress features.

Comments

1 comment

Support

Journey Support Team

December 05, 2025 18:01
Hi Maya - you'll want to reach out to grow@mediavine.com for support regarding the Grow Plugin. The Journey community is used specifically for Journey publishers to connect regarding Mediavine's self-service ad management platform, Journey.
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Journey is Self Supported

Our support staff is monitoring this forum everyday for bugs related to ad delivery, the display and functionality of the Journey dashboard, and any bugs related to the onboarding process. We are typically unable to assist with non-bug related issues like RPM performance expectations, issues setting up the ads.txt file, and questions already answered by our existing help docs. Read here for a more detailed breakdown of how Journey is self-supported and our recommendations for how to find answers to common issues.

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