Hacker News Reader

InvalidStateError: A mutation operation was attempted on a database that did not allow mutations.

[Edit]: I'm on Firefox (with ublock origin). I see others having issues too.

Firefox with ublock origin should not cause any issues. The issue might be caused by Firefox's private window implementation which does not allow IndexedDB operations, which is what Restfox uses for storing the data of the application locally.

Reply on news.ycombinator.com