Yesterday, I got the message from the add-on, to look into developer tools, where message from title was printed. Reason, getHeatmapUrl listener was not there.
Solution, to un- and the re-install the add-on. Might have been prompted by a Firefox update.
Yesterday, I got the message from the add-on, to look into developer tools, where message from title was printed. Reason, getHeatmapUrl listener was not there.
Solution, to un- and the re-install the add-on. Might have been prompted by a Firefox update.