The type or namespace name 'Attribute' could not be found (are you missing a using directive or an assembly reference?)

Predefined type 'System.String' is not defined or imported

Predefined type 'System.Void' is not defined or imported

Predefined type 'System.Object' is not defined or imported

The type or namespace name 'AttributeUsageAttribute' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'AttributeUsage' could not be found (are you missing a using directive or an assembly reference?)

Predefined type 'System.Object' is not defined or imported

The name 'AttributeTargets' does not exist in the current context

Predefined type 'System.Boolean' is not defined or imported

The type or namespace name 'TargetFrameworkAttributeAttribute' does not exist in the namespace 'System.Runtime.Versioning' (are you missing an assembly reference?)

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/setup-dotnet@v1, Goobwabber/[email protected]. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/setup-dotnet@v1, Goobwabber/[email protected]. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

Nullability of type of parameter 'obj' doesn't match overridden member (possibly because of nullability attributes).