Emoncms History Integration - getting data into Emoncms

Configuration
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Hi, I have ESPHome Altherma set up and sending data into HA. I am now looking to send this into a local instance of Emoncms. I found Emoncms History which appears to be the right thing but I can't get the configuration to actually send the data across. I am assuming it is the URL, but I have tried all sorts of variations without success. Any further help appreciated.

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emoncms_history:
  api_key: redacted
  url: http://emon_home.iot/emoncms
  inputnode: 20
  whitelist:
    - sensor.presa_frigorifero_potenza
    - sensor.multipresa_1_potenza
    - sensor.multipresa_2_potenza    
    - sensor.multipresa_3_potenza
    - sensor.presa_

My setup

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image
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