Fresh install 17 - TypeError: Cannot read properties of undefined (reading 'api')

Questions
1

Umbraco version: 17.5.3
Clean installation
SQLite database
No third-party packages
No custom backoffice extensions

Document Types:

  1. Banners

    • Document Type without template
    • No properties
    • Allow at root enabled
    • Allowed child node type: ContenitoreBanner

  2. ContenitoreBanner

    • Document Type without template
    • No properties
    • Allowed child node type: Banner

  3. Banner

    • Document Type without template
    • No properties

Content tree:

Banners
└── ContenitoreBanner

When navigating to/opening the Banners content node, the browser console reports:

TypeError: Cannot read properties of undefined (reading ‘api’)
at createExtensionElementWithApi
at extension-element-and-api-initializer.controller

The issue is reproducible in a completely clean Umbraco 17.5.3 installation.

2

Hi @gavabri

Welcome to the forum!

That sounds like an Umbraco bug, as you have reproduceable steps, you may want to raise it on the issue tracker:

Justin