'NpgsqlConnection.GlobalTypeMapper' is obsolete: 'Global-level type mapping has been replaced with data source mapping, see the 7.0 release notes.'

'Exception.Exception(SerializationInfo, StreamingContext)' is obsolete: 'This API supports obsolete formatter-based serialization. It should not be called or extended by application code.' (https://aka.ms/dotnet-warnings/SYSLIB0051)

Converting null literal or possible null value to non-nullable type.

Possible null reference return.

"pwd" detected here, make sure this is not a hard-coded credential. (https://rules.sonarsource.com/csharp/RSPEC-2068)

"pwd" detected here, make sure this is not a hard-coded credential. (https://rules.sonarsource.com/csharp/RSPEC-2068)

Value type property used as input in a controller action should be nullable, required or annotated with the JsonRequiredAttribute to avoid under-posting. (https://rules.sonarsource.com/csharp/RSPEC-6964)

Value type property used as input in a controller action should be nullable, required or annotated with the JsonRequiredAttribute to avoid under-posting. (https://rules.sonarsource.com/csharp/RSPEC-6964)

Value type property used as input in a controller action should be nullable, required or annotated with the JsonRequiredAttribute to avoid under-posting. (https://rules.sonarsource.com/csharp/RSPEC-6964)