VS Code on macOS and .NET Core 3.0 fix

Visual Studio Code on macOS has small issues with .NET Core 3 projects. To be more precise, Omnisharp extension has certain issues. If you have red squiggles all over your code like in the image below, don't despair - there is a workaround.
As per instructions by filipw
in the GitHub issue, open User settings as JSON and paste the following line:
"omnisharp.path": "1.34.4-beta.34"
Restart Omnisharp and voila, the errors are gone!
Happy coding.