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

Possible null reference argument for parameter 'args' in 'Task<string> Program.GetOutputFolderFromArgs(string[] args)'.

Possible null reference argument for parameter 'path1' in 'string Path.Combine(string path1, string path2, string path3)'.

Possible null reference return.

This async method lacks 'await' operators and will run synchronously. Consider using the 'await' operator to await non-blocking API calls, or 'await Task.Run(...)' to do CPU-bound work on a background thread.

Add a 'protected' constructor or the 'static' keyword to the class declaration. (https://rules.sonarsource.com/csharp/RSPEC-1118)

'ArrayParameterTypeDao.Read(NpgsqlTransaction, string, IEnumerable<Guid>, bool, DateTime?)' hides inherited member 'CompoundParameterTypeDao.Read(NpgsqlTransaction, string, IEnumerable<Guid>, bool, DateTime?)'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

'ArrayParameterTypeDao.MapToDto(NpgsqlDataReader)' hides inherited member 'CompoundParameterTypeDao.MapToDto(NpgsqlDataReader)'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.

'CyclicRatioScaleDao.Read(NpgsqlTransaction, string, IEnumerable<Guid>, bool, DateTime?)' hides inherited member 'RatioScaleDao.Read(NpgsqlTransaction, string, IEnumerable<Guid>, bool, DateTime?)'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword.