So two years later, I’ve had to disable FileVault in order to boot up my machine a day after upgrading to Catalina, been in touch with Apple Support for two hours to finally get back into my Mac and now after a couple of hours of use my keyboard has been disabled again so I can’t properly save my work! I think this was triggered because my external Time Machine drive is still encrypted when my internal drive is not so I’m attempting to reformat my TIME MACHINE drive using DISK UTILITY, obviously losing all my backups, so I can hurry to back up my machine in case my Mac shuts down without warning overnight to install some other dodgy updates therefore totally locking me out since none of my keyboards are allowed to work if anything is encrypted, thanks to Catalina still not being fixed after all this time. What a headache. I was told to update my operating system because of ransomware threats only to find Apple’s own operating system potentially holding my data ransom, as I no longer have proof of purchase and the guy at Support said I may have to bring the machine to a store to update firmware. Why hasn’t this been mentioned before we upgrade so we can wait until Apple get their software working properly? Very frustrated here now.