I have an emonpi that has been working fine for a month or so, but it stopped recording, and when I checked it, it just has the message “Booting please wait”. Whatever I do it reverts to this message, and I cannot connect again to emoncms. What can I do?

Thanks, solved. The SD card seems to have been damaged. I bought a new card, wrote the latest image to it using Etcher, and it has all rebooted and works fine again.