The type 'ulong?' cannot be declared const

The type 'ulong?' cannot be declared const

Process completed with exit code 1.

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v3, actions/setup-dotnet@v3. 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 reference types in return type of 'string? JsonWritableConfig.CurrentPrefix.get' doesn't match implicitly implemented member 'string IWritableConfiguration.CurrentPrefix.get' (possibly because of nullability attributes).

Nullability of reference types in return type of 'IChangeToken? JsonWritableConfig.GetReloadToken()' doesn't match implicitly implemented member 'IChangeToken IConfiguration.GetReloadToken()' (possibly because of nullability attributes).

Nullability of reference types in return type of 'string? JsonWritableConfig.CurrentPrefix.get' doesn't match implicitly implemented member 'string IWritableConfiguration.CurrentPrefix.get' (possibly because of nullability attributes).