Domoticz

I want to use python plugins but i cant seem to install.
My domoticz is installed on a raspberry pi. When i go to the about section, it shows
Version: 2020.2
Build Hash: b63341bc0
Compile Date: 2020-04-26 13:47:55
dzVents Version: 3.0.2
Python Version: None

While Python 3.7 is installed.
When i check with Python -V i get
Python 3.7

When I check with dpkg --get-selections | grep libpython i get
libpython-stdlib:armhf install
libpython2-stdlib:armhf install
libpython2.7-minimal:armhf install
libpython2.7-stdlib:armhf install
libpython3-stdlib:armhf install
libpython3.7:armhf install
libpython3.7-minimal:armhf install
libpython3.7-stdlib:armhf install

Anyone has an idea, i always struggle with python. Hope someone can find the resolution.

Solved with
sudo apt-get install libpython3.6-dev