Count Distinct in Report Dashboard

[saurabh99]

Does anyone can help me to use the Count Distinct function in the Report Dashboard?

Here I want to count the distinct values of a field and display them in the Table but the error is page is not working.

Here is what I did:

I used a distribution table and source as Context Data.

For better understanding, I have attached screenshots as well.

If anyone has different approach or solution please share that as well.

Please share a solution ASAP.

Thanks