Bluetooth Heart Rate Monitor causing boot problems

Executing bootupdate.js brings:

 2v13 (c) 2021 G.Williams
Uncaught Error: Not enough stack memory to decode data
 at line 200 col 50 in bootupdate.js
  require('Storage').write('.boot0',bf,fileOffset);
                                                 ^
in function called from line 204 col 2 in bootupdate.js
});
 ^
>