Core package dappmanager.dnp.dappnode.eth is from a foreign registry

Dappnode offers me to update core to 0.2.50 - but then fails with this error:

Error: Core package dappmanager.dnp.dappnode.eth is from a foreign registry
    at /usr/src/app/webpack:/@dappnode/dappmanager/src/calls/packageInstall.ts:60:15
    at Generator.next (<anonymous>)
    at fulfilled (/usr/src/app/index.js:261953:58)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)

{
  "name": "core.dnp.dappnode.eth",
  "version": "0.2.50",
  "userSettings": {},
  "options": {}
}

Go to this page on you Node:

http://my.dappnode/#/system/update

And do an update from there. It will fix the glitch.