Sorry for the delay. I watched your video but it doesn't give me enough information to troubleshoot the problem. I can only tell that you're getting an element not found error but I'm unable to see why.
I am concerned how the find expression is using a TagIndex of div:600. It means to find div at index 601. What happens if a new div is added or removed? You'll get an element not found error. To determine if this is the problem please let the test fail then go to Step Failure Details
, find and click Export then attach the generated .zip file. It contains valuable information we need to diagnose this type of failure.
Why are you using img for your index? I'm sure there's a better way but I need to see the DOM
for your application and the element you're trying to target to come up with a better approach.