Capstone Project Part 3 - Opportunity Intake Assessment -HELP

In the course video- Capstone Project Part 3 - Opportunity Intake Assessment, at the part where we need to upload the “Automation+Opportunity+Intake+Starter+Kit.pdf” to Claude AI with the prompt, When I try to select the photos/files to upload, it doesnt show the pdf in the dialog box to select, not able to upload the pdf to claude AI.

Can someone please help me with this?