Raster Analysis unavailable

[CostinAilenei]

Hello people,please help me with this problem. I am trying to acces raster analysis to be able to apply vegetation indices but the icon is greyed out. First time when I open Arcgis Pro I can click on icon but after I click, is greyed out. I want to mention that last week I was able to use this feature for NDVI. 

[DanPatterson]

related?

Solved: Raster Analysis is greyed out - Esri Community