Catalina nightmare!

Upgraded to Catalina last week and now unable to print to my Samsung C410W laser printer. I get numerous error messages. ‘Prefilter can’t be opened because Apple cannot check it for malicious software’. Another one then pops up for ‘Rastertosec’. Is this a driver or security issue? Everything was working fine with Mojave. There is no driver available at the moment which is compatible with Catalina. Made an error in not backing up first otherwise I would definitely be rolling back the OS. Not happy with this upgrade at all ! Any ideas guys?