I had this often in the beginning, then not at all for the last year or so (Don't really remember if I did something to fix and what or it just vanished with some firmware).
Recently I was surprised to see it back, but only once so far. So I ignored for now.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I had this often in the beginning, then not at all for the last year or so (Don't really remember if I did something to fix and what or it just vanished with some firmware).
Recently I was surprised to see it back, but only once so far. So I ignored for now.