An error is shown as sendCommand was not declared in this scope.how to rectify it
First thing: format your code properly. Statements that are at the same nesting level should have the same amount of indenting. If you find this rule too hard to follow, you can try the auto-format ...
ESP8266 - error after board update to 3.1.1
The error tells you, that the time.time_ns() python function does not exist. This function was added to the python time lib with Python3 version 3.7. The most likely scenario I can imagin here is, ...
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