Hi @Perumalvs
The error message you shared indicates the collection was empty. The grey result is also indicator that the step was never initiated.
What I would do is check the raw output of the List files in folder step to see what the body result is. That will allow you to verify you're getting the files from the folder you designated. Verify that the input of the For each 2 step is the correct property of the output from List files in folder.