An error has occurred with the fingerprint sensor Shortly ago, my J7 Prime stopped recognizing my fingerprint.

When I go to
Settings ->
Lock screen and security ->
Fingerprint Scanner
I get


  An error has occurred with the fingerprint sensor. If this message appears repeatedly, restart your device.


I tried a few options I found, and none worked:


Rebooting.
Going into Safe Mode. The same error appears. Plus, almost all my widgets in the home screen disappeared, so I had to redo it.
Settings ->
Apps ->
Three dots ->
Show system apps ->
Fingerprint ->
Clear Data
. The cache was already empty.
Rebooting.
Logging off and into my Samsung account.
Developer options (this was already enabled) ->
OEM unlock ->
Enable.
Reboot.
Developer options ->
OEM unlock ->
Disable, and 
Developer options ->
Disable.


What I did not (and I cannot) try:


Rooting my phone (it is a corporate device).
Resetting my phone (same).


What can I do to fix the problem? (other than taking it to the IT dept.)
Most likely the problem is with the fingerprint scanner itself.  He was either damaged or moved away from the water, and he burned