The target framework 'netcoreapp3.1' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

The target framework 'netcoreapp3.1' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

The target framework 'netcoreapp3.1' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

The target framework 'netcoreapp3.1' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

The target framework 'netcoreapp3.1' is out of support and will not receive security updates in the future. Please refer to https://aka.ms/dotnet-core-support for more information about the support policy.

Nullability of reference types in type of parameter 'value' of 'bool ReadOnlyDictionaryWrapper<TKey, TValue>.TryGetValue(TKey key, out TValue value)' doesn't match implicitly implemented member 'bool IReadOnlyDictionary<TKey, TValue>.TryGetValue(TKey key, out TValue value)' (possibly because of nullability attributes).

Nullability of reference types in type of parameter 'value' of 'bool ReadOnlyDictionaryWrapper<TKey, TValue>.TryGetValue(TKey key, out TValue value)' doesn't match implicitly implemented member 'bool IReadOnlyDictionary<TKey, TValue>.TryGetValue(TKey key, out TValue value)' (possibly because of nullability attributes).

Dereference of a possibly null reference.

Possible null reference argument for parameter 'value' in 'void HtmlWriter.WriteAttributeValue(string value)'.