nx.dev - NX Project: The "material:m3-theme@latest" package is not installed - Stack Overflow

after migrating a NX project to angular 19 i get the message from Webstorme IDE:

The "material:m3-theme@latest" package is not installed 

The line in the package.json in devDependencies:

"material:m3-theme@latest": "link:@angular/material:m3-theme@latest",

Running npm install has not effect. Any ideas? Thanks!!!