This repository contains a sample app that reproduces the issue introduced in the .NET Framework 4.7.2.
When executed, the ConnectionString property setter will throw a NullReferenceException which is captured by Sentry using the .NET SDK.
To run it, you'll need a DSN. If you're new to Sentry, you can get one at sentry.io.
You can also run this without an IDE like Visual Studio if you have .NET Core installed:
dotnet run -- "https://your-dsn@sentry.io"
> Sentry event Id: a5631eea6dec4b47a0eecaaf37d67c35