It seems like $price of type ConferenceTools\Tickets\Domain\ValueObject\Price is incompatible with the declared type ConferenceTools\Tickets\Domain\ValueObject\Money of property $price.
Our type inference engine has found an assignment to a property that is incompatible
with the declared type of that property.
Either this assignment is in error or the assigned type should be added
to the documentation/type hint for that property..
The expression return $this->price returns the type ConferenceTools\Tickets\Domain\ValueObject\Money which is incompatible with the type-hinted return ConferenceTools\Tickets\Domain\ValueObject\Price.
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..