Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/cache@v3, actions/setup-dotnet@v3, actions/upload-artifact@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

Possible null reference return.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Possible null reference return.

Cannot convert null literal to non-nullable reference type.

Cannot convert null literal to non-nullable reference type.

'Color' overrides Object.Equals(object o) but does not override Object.GetHashCode()

'Color' defines operator == or operator != but does not override Object.GetHashCode()