Clip partially offline

Hi bm forum,
I've searched the forum and the web but no one seemed to have the same problem that I have:
I finished a project a couple of weeks ago, but I needed to make changes now.
I opened the project and now one of the clip is offline, but not entirely.
I can watch the first few seconds, but the rest is somehow offline.
The clip plays perfectly fine in braw player.
When I create a new project the clip is also playing just fine.
I relinked the media, put the media on another disk, relinked again, restarted DaVinci, restarted the computer, deleted all cache files, relinked another 10 times. Nothing changes.
I don't know if it's important, but in the meantime I upgraded my macOS to Big Sur and from DaVinci Studio 16 to DVStudio17. It didn't affect any other project.
Would be nice if anyone could help!
The footage is BMPCC 6k braw 12:1 25fps.
MacBook Pro 2017
macOS Big Sur
3,1 GHz Quad-Core Intel Core i7
16 GB 2133 MHz LPDDR3
Radeon Pro 560 4 GB
DaVinci Studio 17.1 Build 24
I've searched the forum and the web but no one seemed to have the same problem that I have:
I finished a project a couple of weeks ago, but I needed to make changes now.
I opened the project and now one of the clip is offline, but not entirely.
I can watch the first few seconds, but the rest is somehow offline.
The clip plays perfectly fine in braw player.
When I create a new project the clip is also playing just fine.
I relinked the media, put the media on another disk, relinked again, restarted DaVinci, restarted the computer, deleted all cache files, relinked another 10 times. Nothing changes.
I don't know if it's important, but in the meantime I upgraded my macOS to Big Sur and from DaVinci Studio 16 to DVStudio17. It didn't affect any other project.
Would be nice if anyone could help!

The footage is BMPCC 6k braw 12:1 25fps.
MacBook Pro 2017
macOS Big Sur
3,1 GHz Quad-Core Intel Core i7
16 GB 2133 MHz LPDDR3
Radeon Pro 560 4 GB
DaVinci Studio 17.1 Build 24