Architecture diagrams produce console warnings - "Do not assign mappings to elements without corresponding data"

[slorber]

Description

Rendering architecture diagrams shouldn't produce console warnings

Steps to reproduce

Go to https://mermaid.js.org/syntax/architecture.html and open the console in Chrome 130:

Many warnings printed like this one:

Do not assign mappings to elements without corresponding data (i.e. ele `db-server` has no mapping for property `label` with data field `label`); try a `[label]` selector to limit scope to elements with `label` defined

Screenshots

Code Sample

No response

Setup

• Mermaid version: latest / site version
• Browser and Version: Chrome 130

Suggested Solutions

Fix console warning

Additional Context

I noticed the issue because Docusaurus has Argos visual regression tests and I also validate with Playwright that there's no console warnings/errors.

Our latest blog post using an architecture diagram produces such warning: https://docusaurus.io/blog/releases/3.6#mermaid

https://github.com/facebook/docusaurus/actions/runs/11721835347/job/32650127936