[Tiny 6.1.0] "only in private projects"

Security warning while building: “warning Workspaces can only be enabled in private projects”

It is the first time I am seeing this warning while building tinymce.

Tiny Master => ~6.1.0 Windows Yarn 1.22.19

The package.json file of Tiny begins with:

{
  "name": "root",
  "private": true,
  "workspaces": [
    "modules/*"
  ],
...

So what? The required declaration of private: true is done. What is the reason for this security warning?

[Georg-Git]

Ok - and I solved the grunt-cli warning.

In my build script I had added: yarn add grunt-cli

But there was no need for this line anymore. => Everthing fine

[TheSpyder]

A simple upgrade of our transitive dependencies upgraded keyv and fixed the problem!