MacOS blocks the screen saver

[hhh1969]

Installing worked fine (v1.2). When trying to launch, however, MacOS 10.15.1 (19B88) blocked with the following error:

“ProDisplayXDR.saver” can’t be opened because Apple cannot check it for malicious software. This software needs to be updated. Contact the developer for more information.

The only options are “Show in Finder” and “OK”