parameters: (self, *args, **kwargs)
docstring: Invoked when error occured during download process
docstring_summary: Invoked when error occured during download process
docstring_tokens: Invoked when error occured during download process
function: def on_error(self, *args, **kwargs):
  		"Invoked when error occured during download process"
  		pass
function_tokens: def on_error ( self , * args , * * kwargs ) : pass