Graphs of what, your sensors? If you want to include your sensor graphs, use the include section for your sensors. Also, it looks like your spacing is way off… follow the docs spacing:
# Example configuration.yaml entry with include and exclude
history:
include:
domains:
- sensor
- switch
- media_player
entities:
- sun.sun
exclude:
domains:
- light
entities:
- sensor.last_boot
- sensor.date
Spacing is ok, it is not “copy/paste” from the system, just typed directly in the post.
I am talking about a temperature-graph of a temperature sensor. If I include the sensor like in the Docu, then I have only the horizontal bar, no X-Y Graph.