"CALLBACK" error?

I just played around with the blob clock, because it uses seconds and thus according to my theory is more likely to break. I connected to the watch using WebIDE and sent Ctrl-C via the console. After a few attempts, i always get this:

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         |_| espruino.com
 2v13.138 (c) 2021 G.Williams
        let time=new Date();let hours=time.getHours();let mins=time.getMinutes()...
                    ^
debug> 

The watch can be reset via button (1s) , and i get this:

ERROR: Ctrl-C while processing interval - removing it.
Execution Interrupted during event processing.
Interpreter error: [
  "CALLBACK"
 ]
New interpreter error: CALLBACK
>