Steinberg UR-424

Hi,

last week I've updated my macbook pro with the new Catalina version 10.15.4 (19E266). 

Since this time I cannot any longer use my audio interface Steinberg UR 424, which I used daily.

I've already tried to: deinstall/reinstall the latest drivers of the audio interface, change the security and privacy setting, in order to allow apps downloaded from other developers, but it did not work. I've also tried to install the Yamaha thunderbolt drivers, but nothing. In parallel I've tested the audio interface with another macbook pro, with an older Os version and it worked right away.

Any idea hot to solve this?