vue.js – Can not start Vue UI after updating Node and dev-dependencies

After updating Node to the latest version I have trouble to start vue ui. First it was some dev-dependencies. After setting the latest versions for these dependencies now I get

andreas@andreas-X230:/opt/lampp/htdocs/homepage/apps/projectA$ vue ui
🚀  Starting GUI...
node:events:491
      throw er; // Unhandled 'error' event
      ^

Error: ENOENT: no such file or directory, scandir '/opt/lampp/htdocs/homepage/apps/projectB/node_modules/@vue/cli-service/locales'
[...]

Can someone help me out? It’s confusing it is looking for a file in another project (note the different paths to projectA and projectB.)