It can come from different issues. Let's see here the different things you should check :
Step 1 : Convert your Project
If you started your project with the Blackmagic Plugin, then the project needs to be converted to BRAW Studio to be stable.
You can check this article
to know how to do that.
Step 2 : Reset your Plugin Cache
In rare cases, Premiere Pro saves some old information about the plugin which makes it unstable with newer versions ..
To clean the Plugins cache, please start Premiere Pro and maintain the "Shift" Key pressed. You should get a message "Are you sure you want to reset your plugin caches ?" : answer Yes !
Step 3 : Clean your Media Cache
Open a new empty project in Premiere Pro, and then in the top menu : "Edit" -> "Preferences" -> "Media Cache.." : click on the "Delete.." button and then select "Delete all media cache files from the system."
Step 4 : If the previous solutions did not work
with a Bug report
! Here is an article
which will show you how to generate this bug report ! Remember to
reproduce the crash
with logs enabled before to send us the zipped logs !Contact us here !