String arguments are not possible

Thank you @bander2 for the preliminary analysis you provided me.
I will try to understand it better and propose a solution as soon as possible.

Hi @bander2, i ran a quick check and fortunately there's no bug.
The problem lies in your configuration. The data_key property shold be specified under `source:` and not before. You can also see this from the documentation on the module's home page.
As you can see by using the following migration:

id: migrate_morty
label: Migrate Morty to Articles
migration_tags: null
source:
  plugin: graphql
  endpoint: https://rickandmortyapi.com/graphql
  data_key: results
  query:
    characters:
      arguments:
        filter:
          name: "Morty"
      fields:
        - results:
            - id
            - name
  ids:
    id:
      type: string
process:
  title: name

destination:
  plugin: 'entity:node'
  default_bundle: article

I got the desired result:

I close the issue, thank you.

I am still getting this with your migration on a fresh install:

Drupal: 9.5.3
PHP: 8.0.27
Drush: 9.0.27
Migrate Source GraphQL: 2.03

Running drush mim migrate_morty -v gives me:

In Results.php line 54:          
[GraphQL\Exception\QueryError]
Expected type String, found Morty. 

drush migrate:status -v produces this output.

 [error]  Could not retrieve source count from migrate_morty: Expected type String, found Morty. 
 [error]  Could not retrieve source count from migrate_morty: Expected type String, found Morty. 
 [error]  Could not retrieve source count from migrate_morty: Expected type String, found Morty. 
 --------------- -------- ------- ---------- ------------- --------------- 
  Migration ID    Status   Total   Imported   Unprocessed   Last Imported  
 --------------- -------- ------- ---------- ------------- --------------- 
  migrate_morty   Idle     N/A     0          N/A                          
 --------------- -------- ------- ---------- ------------- --------------- 

The error itself comes from the endpoint. I believe that we are intending to send a query like this:

query Query {
  characters(filter: {name: "Morty"}) {
    results {
      id
      name
    }
  }
}

But instead are sending:

query Query {
  characters(filter: {name: Morty}) {
    results {
      id
      name
    }
  }
}

I don't know what the difference could be between your environment and mine that would account for this.

Hi @bander2, i will check again and let you know soon.

Hi @bander2, i've switched on your same fresh install, and yes. I've the same your error.
I'm working on a patch.
Which I will release as soon as possible.
Thank you.

Hi @bander2, i've made a patch 3341694_string_arguments_not_possible.patch 3341694_string_arguments_not_possible.patch →
The patch includes:
- Fix for string arguments
- Multiple arguments now are supported
- Errors are now shown directly as drush output without -vvv needs.

I will include this patch for the 2.0.4 version on which i'm currently working.
Thank's, let me know how is it.

Hi @bander2,
I have performed further tests and can confirm that it is now working correctly.
I have released everything in the new version 2.0.4.
Thank you.

It's working, thanks!

Thanks to you! 💪