Running Denemo on macOS Catalina

[Gabriel Ellsworth]

Hello,

I am new to Denemo and LilyPond. I tried to install Denemo this morning, but when I try to open the program I get the following error message:

I have macOS Catalina (version 10.15.5). Is my OS causing the problem?

I have no computer-programming background; apologies in advance for my cluelessness.

Thanks,
Gabriel