External Storage Support makes Server unstable

Hello, I’m still fairly new to the topic and have a question:
When I want to activate the “External Storage Support” app on Nextcloud, I get this error message:

“This app cannot be activated because it makes the server unstable”

I have Nextcloud running as Docker onver Unraid

Nextcloud version: 28.0.4
Unraid version: 6.12.9
App Version: 1.20.0

I hope someone can help me