If you're creating a datapack with Apoli, e.g. an Origins datapack, you should check whether you use any of these things:
damage
entity actiondamage
bientity actiondamage_over_time
power type
While your datapack might work without any changes, you should update it to ensure correct functionality both now and going forward.
To update to using damage types, change from using the field source
or damage_source
to using the new field damage_type
. Register a new damage type for each different kind of damage you use in your datapack, and specify the ID in the corresponding action or power.