any help with this question

Assets/Medieval Environment/Standard Assets/Editor/Water (Pro Only)/Water4/WaterBaseEditor.cs(8,13): error CS0246: The type or namespace name `WaterBase’ could not be found. Are you missing a using directive or an assembly reference?

I’ve reimported my medieval environment and standart assets but the problem continues

same error

how to settle it?

I’ve got the same error … Did you find a solution ?