A similar discussion has occurred in the thread below.
Project could not be loaded, it may be damaged or contain outdated elements.
From my experience, which perhaps could help you -
I had a problem with Windows Premiere saying the file is damaged when I opened my project file by double clicking it. However, it I opened Premiere first, then opened the file, it worked.
I always open Premiere and open the project that way. I am opening the program and dragging the file over and its giving me the error. I try to do it on File, Import but the same result. Everything was working fine less than a month ago. Not sure what has changed to cause this problem.
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Dragging files can cause errors.
Use the Media Browser to ingest footage.
What camera was used to record the footage?