JSON import fails to read file with single null value

[jpJuni0r]

Importing the following file throws an exception.

{
  "key": null
}

[jpJuni0r]

I guess it's somewhat my fault, as I selected the "DynamoDB JSON" importer instead of "JSON".

But when I manually select "JSON", I also get an error named "Wrong file format".

[AntonShuvaev]

Fixed with 2023.1.0