Looks like a software conflict.
Is it possible to try to restore and reinstall MacOS and restore the files.
Start in recover, Hold CMD + R when turning on the mac
Click and open Disk utility
Select the installed SSD
Click erase, make sure the format is set to Mac OS Extended Journaled
Click erase, Warning: ALL DATA ON THE SSD WILL BE ERASED.
When done, exit disk utility
Click Install MacOS
Follow the steps,
When asked to restore data click Restore from a Time Machine backup or Startup volume
Select the old spinning hard drive
Click next, etc
When done, reboot the mac and test