Errors in new Home assistant version

[Martinvdm]

In the newest Hass 2023.1.2 at the boot state is generating below errors:

2023-01-10 20:01:29.368 WARNING (MainThread) [homeassistant.helpers.template] Template variable warning: 'dict object' has no attribute 'unavailable' when rendering '{% set speedperc = {'Standby': 0, 'Low': 33, 'Medium': 66, 'High': 100} %} {{speedperc [states('sensor.centrale_afzuiging_fanspeed')]}}'
2023-01-10 20:01:29.372 WARNING (MainThread) [homeassistant.helpers.template] Template variable warning: 'dict object' has no attribute 'unavailable' when rendering '{% set speedperc = {'Standby': 0, 'Low': 33, 'Medium': 66, 'High': 100} %} {{speedperc [states('sensor.centrale_afzuiging_fanspeed')]}}'
2023-01-10 20:01:29.373 ERROR (MainThread) [homeassistant.components.template.fan] Received invalid percentage:  for entity fan.centrale_afzuiging

Perhaps it has something to do with the 'unavailable' state at the boot of hass.