is this someting to worry about ?

[kurtdefeyter]

Logger: homeassistant.components.sensor
Source: components/sensor/init.py:497
Integration: Sensor (documentation, issues)
First occurred: 5:56:57 AM (8 occurrences)
Last logged: 5:56:57 AM

Entity sensor.dynamic_prices_highest_energy_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('monetary') it is using; expected None or one of 'total'; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
Entity sensor.dynamic_prices_average_electricity_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('monetary') it is using; expected None or one of 'total'; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
Entity sensor.dynamic_prices_current_percentage_of_highest_electricity_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('monetary') it is using; expected None or one of 'total'; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
Entity sensor.dynamic_prices_time_of_highest_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('timestamp') it is using; expected None; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
Entity sensor.dynamic_prices_time_of_lowest_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('timestamp') it is using; expected None; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author

[Marc]

Yes this is something to worry about, but not now yet :)

WARNING (MainThread) [homeassistant.components.sensor] Entity sensor.current_electricity_market_price (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('monetary') it is using; expected None or one of 'total'; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
WARNING (MainThread) [homeassistant.components.sensor] Entity sensor.next_hour_electricity_market_price (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('monetary') it is using; expected None or one of 'total'; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
WARNING (MainThread) [homeassistant.components.sensor] Entity sensor.lowest_energy_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('monetary') it is using; expected None or one of 'total'; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
WARNING (MainThread) [homeassistant.components.sensor] Entity sensor.highest_energy_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('monetary') it is using; expected None or one of 'total'; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
WARNING (MainThread) [homeassistant.components.sensor] Entity sensor.average_electricity_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('monetary') it is using; expected None or one of 'total'; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
WARNING (MainThread) [homeassistant.components.sensor] Entity sensor.current_percentage_of_highest_electricity_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('monetary') it is using; expected None or one of 'total'; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
WARNING (MainThread) [homeassistant.components.sensor] Entity sensor.time_of_highest_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('timestamp') it is using; expected None; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.
WARNING (MainThread) [homeassistant.components.sensor] Entity sensor.time_of_lowest_price_today (<class 'custom_components.entsoe.sensor.EntsoeSensor'>) is using state class 'measurement' which is impossible considering device class ('timestamp') it is using; expected None; Please update your configuration if your entity is manually configured, otherwise report it to the custom integration author.