Mac won't start because it can't scan for malware

Hi
Today I downloaded Komodo but it won’t start because Apple can’t scan for malware.
I hope you can help me.
James

You have to work around that. Fortunately, Apple has a tip sheet they published when they turned that feature on.

You should also ready the Community Forum posts on compatibility issues that you’re going to hit with any version of OS X after Catalina.