Link to the fingerprint fix update. Put this file inside the SD card and name it update.zip, through any medium (card reader or any other phone) then insert it on your S10+ since this file is only for the Plus Variant and go to recovery mode of your phone. To get into recovery mode, switch off your phone. Press volume down+bixby key+power key and keep holding the volume down and bixby key. You'll get into the recovery. Go down to install update.zip from SD card and select the file. Let it update. Your old pattern/pin will start working.
For S10e and S10, please find the links on xda Samsung S10 series forum.
This is a solution for all the people with S10+ who are already locked out and can't go past lockscreen.