Sounds like heap memory is incredibly low! Not sure what the cause of it could be. Did you try downgrading the firmware to 1v97-1v98? These use an earlier version of the Espressif SDK. Maybe could help -- just guessing.
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.
Sounds like heap memory is incredibly low! Not sure what the cause of it could be. Did you try downgrading the firmware to 1v97-1v98? These use an earlier version of the Espressif SDK. Maybe could help -- just guessing.