Final Cut Pro won't open.

You have Chrome and its keystone daemons installed which has been known to cause problems with the ProApps. See https://chromeisbad.com for instructions on how to completely remove Chrome. Just trashing the app is not enough.

I'm seeing some old software in the report. In a clean install, you completely format and erase the drive (after doing at least one or preferably two complete backups with TimeMachine and something like CarbonCopyCloner) and then install the OS. Then, only migrate the User data from a backup, no Applications or anything else. All applications should be downloaded fresh. Is this how you did your clean install?

2021-11-25 Clean Free Transitions (1.0)

Is this the free "10 Clean Transitions" from Lenofx? https://lenofx.com/collections/freebies/products/10-clean-transitions-free

It looks quite old with the system requirements saying, "Compatible with Final Cut Pro X 10.2.3" Maybe it's broken in Monterey and/or FCP 10.6.x?

Did you install homebrew python? If so, see this for a possible solution. https://developer.apple.com/forums/thread/119429

Baraccuda wrote:

No FCP does not have full disk access enabled in system preferences. Should it be enabled?

Yes.

MtD

We need to know more about your setup. The crash reports mean very little to anyone except developers.

Please run Etrecheck and post its full report here. Use the "additional text" button and paste the report into the text box.

Good luck! Make sure you have a complete backup (or two just to be safe). Here's a pretty good step-by-step for the different recent macOS versions. https://www.macworld.co.uk/how-to/clean-install-macos-3637409/

What computer is this? What version of FCP do you have?

Which MBP?

I would do a clean OS install and migrate only the users.

I did a search on the error message you posted above and a few results suggested it was an artifact of a homebrew python installation. Did you install homebrew python?