MQTT Import

[starfish]

this plugin would be just what I need, unfortunately I cannot compile. searching the forum showed, that other users have the same problem but revealed no real solution.
I tried
arduino ide 1.8.1 / esp8266 package 2.3.0
arduino ide 1.6.5 / esp8266 package 2.0.0
as portable or installer version
on ESPEasy R120 / Wemos D1 4M (1M SPIFFS)

I need help -what else can I try?

edit Feb.24: - seems to work see:
viewtopic.php?f=4&t=1149&start=70#p13728