> error { target: IDBOpenDBRequest, isTrusted: true, srcElement: IDBOpenDBRequest, eventPhase: 0, bubbles: true, cancelable: true, returnValue: true, defaultPrevented: false, composed: false, timeStamp: 387, … }
  >  <empty string> util.js:640:15
  > 
  > Uncaught (in promise) ReferenceError: Y is not defined
  >    init https://linuxontheweb.github.io/sys/fs.js:199