Can't harvest with nanowallet

I noticed the standalone wallet quit harvesting. I tried to run it, to no avail. So then I tried to open the nano wallet and start delegated harvesting (which the remote harvesting is already active).

Iā€™m using this node: HugeAlice.nem.ninja

When I enter my password and click on the start delegated harvesting button, I get the following error message:

How can I resolve this and get back to delegated harvesting?

Thanks :slight_smile: