Problem when intalling an AddIn

[woumo32]

Hi, I've been having while trying to install DSAS addin.  

This window pops up and I don't know how to fix it.

The AddIn folder has this path: "C:\Program Files\ArcGIS\Pro\AddIns\DSASAddin.esriAddIn" and I added it in the Add-In Manager in ArcGIS Pro. 

I don't know what to do.

[BarryNorthey]

I did a quick check on the DSAS addin from the USGS and it seems to be for ArcGIS Desktop. From the website: "The Digital Shoreline Analysis System (DSAS) v5 software is an add-in to Esri ArcGIS desktop (10.4-10.7+). . . I didn't see any option for ArcGIS Pro. Pro addins would have extension .esriAddInX. Check with USGS to see if they have one for Pro.