Problems with darksky

Just installed 0.70.1 ad i get tons of these errors:

2018-06-01 20:02:00 WARNING (MainThread) [homeassistant.components.sensor.template] Could not render template Giovedì 07 Giugno, the state is unknown.

I changed temperature min and max to low and high.

My template for forecast is the following:

  forecast_1:
    friendly_name_template: >
      {%- set date = as_timestamp(now()) + (1 * 86400 ) -%}
      {% set giorno = ["Domenica", "Lunedì", "Martedì", "Mercoledì", "Giovedì", "Venerdì", "Sabato"] %}
      {% set mese = ["Gennaio", "Febbraio", "Marzo", "Aprile", "Maggio", "Giugno", "Luglio", "Agosto", "Settembre", "Ottobre", "Novembre", "Dicembre"] %}
      {% set m_ok = date | timestamp_custom("%m") | int %}
      {% set g_ok = date | timestamp_custom("%w") | int %}
      {{giorno[g_ok] + ' ' + date | timestamp_custom("%d") + ' ' + mese[m_ok - 1]}}
    value_template: >
      {{states.sensor.dark_sky_daily_high_temperature_1.state|round(0)}}°|{{states.sensor.dark_sky_daily_low_temperature_1.state|round(0)}}°|{{states.sensor.dark_sky_precip_probability_1.state|round(0)}}%
    entity_picture_template: >-
      {{ '/local/icons/dark_sky/' ~ states.sensor.dark_sky_icon_1.state ~ '.png'}}

And darksky sensor is:

sensor:
  - platform: darksky
    api_key: !secret darksky_api_key
    longitude: !secret longitude_casa # mettete le vostre coordinate
    latitude: !secret latitude_casa
    language: it
    forecast:
      - 1
      - 2
      - 3
      - 4
      - 5
      - 6
      - 7
    monitored_conditions:
      - summary
      - icon
      - temperature
      - temperature_low
      - temperature_high
      - apparent_temperature
      - humidity
      - hourly_summary
      - daily_summary
      - precip_probability
      - precip_intensity
      - wind_bearing
      - wind_speed
      - pressure

So where is the error?