You have the same scenario at this user:
viewtopic.php?f=21&t=217572#p1149372Again, this could only possibly happen with the project loaded in Resolve Studio, because free Resolve will not allow you to add a Spatial Video clip to the Media Pool.
In your case, clip 1123 is a Spatial Video clip. And adding that clip to the timeline automatically made the timeline a stereo 3d timeline, which free Resolve cannot open.
That clip is located here: /Volumes/1TB_NVME/DaVinci-Files/Cruise Baltic 2024/IMG_5078.MOV
What I've done in your project is removed that clip from the Media Pool, made a copy of your Timeline 1, called Timeline 2, then removed Timeline 1.
Actually, doing the above set me back a few hours. I also had to actually remove that clip from the V2 timeline. Just removing it from the Media Pool was not adequate. I'd have had this to you much sooner except for that.
I then attempted to verify the new project loads in free 19.1.3. It didn't. Because the clip was still in the V2 track. Removing it from both the Media Pool and the V2 track, along with changing the timeline from stereo to non-stereo allows it to load in free.
Hopefully you can replace the missing file with something other than a Spatial Video file.
Here is a link to the fixed project:
https://www.dropbox.com/scl/fi/wkqnvzjk ... i4pwh&dl=0