Parsing PostgreSQL jsonb array gets error

[alexander161198]

Is there an existing issue for this?

• I have searched the existing issues

Product

Hot Chocolate

Describe the bug

An error throws when trying to execute query a model with an attribute of type jsonb that contains an array.
I saw similar problem #4429 . But in my case another error occurs.

Steps to reproduce

1. There is entity class (and related classes):

 public class class1Alias
    {
        public String name { get; set; }

        [Column(TypeName = "jsonb")]
        public TestStructAliasSimple? SimpleStruct { get; set; }

        [Column(TypeName = "jsonb")]
        public TestStructArray? StructArray { get; set; }

        public String[]? ArrayAttr { get; set; }

        [Key]
        public Guid Id { get; set; }
    }

public class TestStructAliasSimple
    {
        public Int32? AttrIntAlias { get; set; }

        public String? AttrStrAlias { get; set; }
    }

public class TestStructArray
    {
        public Boolean? AttrBoolAlias { get; set; }

        public String[]? AttrArrayAlias { get; set; }
    }

And I have simple query method:

public async Task<IQueryable<teststructure.class1Alias>> teststructure_class1alias([ScopedService()] InteractiveStoreContext dbcontext)
        {
            var entities = dbcontext.teststructure_class1Aliases.AsQueryable();
            return await Task.FromResult(entities);
        }

And I have mutations methond, ofc. But I think It doesn't matter now.

2. I exetute the add mutation which succeeded:

mutation Add{
    add_teststructure_class1alias(teststructure_class1alias: {
      name: "name1", 
      simpleStruct:{attrIntAlias:1, attrStrAlias:"value1"}, 
      structArray:{attrBoolAlias:true, attrArrayAlias:["1", "2"]}, 
      arrayAttr:["d","f"]}) 
  {
    insertedId
    countObjectsModified
    operation
    objectName
  }
}

Data was successfully written to the database:

3. I try to execute query:

query Simple{
  teststructure_class1alias {
    items {
      name,
      id,
      simpleStruct
      {
        attrStrAlias,
        attrIntAlias
      },
      structArray
      {
        attrBoolAlias,
        attrArrayAlias
      },
      arrayAttr
    }
  }
}

And I get the error: No coercion operator is defined between types 'System.String' and 'System.String[]'.

When I use query without structArray it works fine:

query Simple{
  teststructure_class1alias {
    items {
      name
      id,
      simpleStruct
      {
        attrStrAlias,
        attrIntAlias
      },
      arrayAttr
    }
  }
}

So is this a bug and am I doing something wrong?

Relevant log output

No coercion operator is defined between types 'System.String' and 'System.String[]'.

Additional Context?

It works fine with simple jsonb attributes or simple arrays. But jsonb with arrays broke the program.

Version

12.15.2