Trouble uploading picture in Shotcut

Hello, I am still having significant challenges uploading my pictures and videos into Shotcut. I have not only tried to upload it through the Open File icon, but I have tried to pull it from the a file or desktop into Shotcut. I have previously done 2 videos and was reasonably successful. Still really new to Shotcut and have looked at other videos that address the concern I have. Unfortunately, no success.
The message that pops up: Failed to open C:username/ehm…

Anyone have any suggestions as to how I might get it working?

HEIC is not supported by Shotcut on Windows. You should export as JPEG from your photos manager.

Thank you so much, it corrected the problem.