Message Box Not Displaying Output DataTable values


I read an Excel file (.xls or .xlsx format) and I use Output DataTable and Message Box to check the values in the excel file. I noticed that the Message Box is not displaying. I tried running step by step but got the same.

I tried running this on Enterprise 2019.4.4 and on Community Edition but got the same error. Any help?

See screenshot for captured when I ran on Community Edition:

Hi @kenneth.m

Could you please share your workflow with us.