Unable to load solution from Visual Studio.

I was writing code in Visual Studio for Unity project.

in Visual Studio "Unable to load solution"
adLoad operation failed <
The error appears.

Other projects are fine, but only this project is happening.
I tried reinstalling it once, but it still didn't fix it.
I don't know if it's relevant, but there was an update to Visual Studio the day before the error occurred.

I use a mac computer.

Does anyone know?
I look forward to your kind cooperation.