Hi, hush
After checking and testing with some attempts, I identified some reasons. Your migration from Joomla 3 to Joomla 4 crashed due to some extensions that aren't ready for Joomla 4.
Kindly revert to Joomla 3 version, then check all the extensions to verify which ones are ready on Joomla 4 and which ones aren't. Once this is done, you will be able to migrate from Joomla 3 to 4 safely.
Regards,