Migrate Paragraphs Library reference from CSV

Hi,

I have a CSV file with some content referring to some already existing paragraphs in library (created manually).

Until now, I'm not successful importing it, after several attempts, my 'process' code is looking like this:

  field_description:
    plugin: entity_lookup
    source: field_description
    entity_type: paragraphs
    bundle: library
    value_key: id

There is obviously something wrong, but I could not find yet any documentation or sample.

Here is the error:

In MigrateToolsCommands.php line 697:
csv_courses Migration - 3 failed.

Is it possible to migrate paragraphs in library?

Any hints are welcome.