GraphQl products query returns error: GetAttributeValueComposite::execute(): Argument #3 ($value) must be of type string, null given

[zakdma]

Preconditions and environment

• Magento version 2.4.7-p1 (latest for now)
• OpenSearch search engine configured and used by Magento

Steps to reproduce

1. Install vanilla Magento
2. Create DropDown attribute with code test_ddl and options: Option 1, Option 2, Option 3 and Values Required: No
3. Set attribute parameters

• Use in Search: Yes
• Use in Layered Navigation: Filterable (with results)
• Use in Search Results Layered Navigation: Yes
• Visible on Catalog Pages on Storefront: Yes
• Used in Product Listing: Yes

4. Add attribute test_ddl to default Attribute set
5. Create new product in admin with SKU simple-null
6. Add Price, Stock, Category. Set test_ddl to Option 1
7. Save product
8. Open edit product form again and change test_ddl to empty value https://prnt.sc/9BdefPLEi8M4
9. Reindex all indexes bin/magento ind:reind Please make sure they all reindexed successfully
10. Open any graphql client and make query

query {
    products(
      search: "simple"
    ) {
        total_count
        items {
            name
            sku
            custom_attributesV2(filters: {is_visible_on_front: true}) {
              items {
                code
                ... on AttributeValue {
                      value
                    }
                ... on AttributeSelectedOptions {
                      selected_options {
                        value
                      }
                    }
              }
            }
        }
        aggregations{
           attribute_code
           options{
             value
           }
        }
        page_info {
            page_size
            current_page
        }
    }
 }

Expected result

There is list of products with the simple-null product in it.
There is no error

Actual result

There is error in response

  "errors": [
    {
      "message": "Internal server error",
      "locations": [
        {
          "line": 12,
          "column": 13
        }
      ],
      "path": [
        "products",
        "items",
        3,
        "custom_attributesV2"
      ]
    }
  ],

Check exception.log and see error:

[2024-06-27T10:00:50.656107+00:00] main.ERROR: Magento\EavGraphQl\Model\Output\Value\GetAttributeValueComposite::execute(): Argument #3 ($value) must be of type string, null given, called in /home/zak/sites/magento/test1/public/vendor/magento/module-catalog-graph-ql/Model/Resolver/Product/ProductCustomAttributes.php on line 122

GraphQL (12:13)
11:             sku
12:             custom_attributesV2(filters: {is_visible_on_front: true}) {
                ^
13:               items {
 {"exception":"[object] (GraphQL\\Error\\Error(code: 0): Magento\\EavGraphQl\\Model\\Output\\Value\\GetAttributeValueComposite::execute(): Argument #3 ($value) must be of type string, null given, called in /home/zak/sites/magento/test1/public/vendor/magento/module-catalog-graph-ql/Model/Resolver/Product/ProductCustomAttributes.php on line 122 at /home/zak/sites/magento/test1/public/vendor/webonyx/graphql-php/src/Error/Error.php:170)
[previous exception] [object] (TypeError(code: 0): Magento\\EavGraphQl\\Model\\Output\\Value\\GetAttributeValueComposite::execute(): Argument #3 ($value) must be of type string, null given, called in /home/zak/sites/magento/test1/public/vendor/magento/module-catalog-graph-ql/Model/Resolver/Product/ProductCustomAttributes.php on line 122 at /home/zak/sites/magento/test1/public/vendor/magento/module-eav-graph-ql/Model/Output/Value/GetAttributeValueComposite.php:34)"} []

Additional information

Issue is because \Magento\EavGraphQl\Model\Output\Value\GetAttributeValueInterface::execute hase third paremeter $value of type string when null value received.

Note: Just so you know, the problem is not only with null/string. There is also a problem with any other value type other than string. For example if value is int there will be the same error.
I found the same issue when I added the quote address custom attribute with int type. When setting this attribute value using setShippingAddressesOnCart and retrieving the shipping address it also failed.

Release note

No response

Triage and priority

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

Hi @zakdma. Thank you for your report.
To speed up processing of this issue, make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, Add a comment to the issue:

• @magento give me 2.4-develop instance - upcoming 2.4.x release
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[m2-assistant]

Hi @engcom-Delta. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).
• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue.
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• 4. Verify that the issue is reproducible on 2.4-develop branch
  Details

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• 5. Add label Issue: Confirmed once verification is complete.
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[zakdma]

Just so you know, the problem is not only with null/string. There is also a problem with any other value type other than string. For example if value is int there will be the same error.
I found the same issue when I added the quote address custom attribute with int type. When setting this attribute value using setShippingAddressesOnCart and retrieving the shipping address it also failed.

[engcom-Delta]

Hi @zakdma ,

Verified the issue on 2.4-develop and we are not able to reproduce this issue.

Steps to reproduce:-

1.Install vanilla Magento
2.Create DropDown attribute with code test_ddl and options: Option 1, Option 2, Option 3 and Values Required: No
3.Set attribute parameters
Use in Search: Yes
Use in Layered Navigation: Filterable (with results)
Use in Search Results Layered Navigation: Yes
Visible on Catalog Pages on Storefront: Yes
Used in Product Listing: Yes
4.Add attribute test_ddl to default Attribute set
5.Create new product in admin with SKU simple-null
6.Add Price, Stock, Category. Set test_ddl to Option 1
7.Save product
8.Open edit product form again and change test_ddl to empty value
9.Open any graphql client and make query

created attribute

the values

added to default attribute set

product created and value saved to option 1

product edited value emptied and saved

no error

Please refer the attached screenshots and let us know if we missed anything.

[OvalMedia]

Why am I getting this response? I did not report or comment on this.

[zakdma]

Hey @engcom-Delta
Is far as I can see from your screenshots you are not using vanilla Magento. You Magento instance has a lot of attribute sets and maybe also other data, modules or configurations. Please use vanilla magento that can be installed like this
composer create-project --repository-url=https://repo.magento.com/ magento/project-community-edition public

Also please use OpenSearch as a search engine and reindex all indexes bin/magento ind:reind before making graphql request
Please make sure they all reindexed successfully.

Regards.

[engcom-Delta]

Hi @zakdma ,

Verified the issue on 2.4-develop and we are not able to reproduce this issue.

Preconditions:-

OpenSearch search engine configured and used by Magento

Steps to reproduce:-

1.Install vanilla Magento
2.Create DropDown attribute with code test_ddl and options: Option 1, Option 2, Option 3 and Values Required: No
3.Set attribute parameters
Use in Search: Yes
Use in Layered Navigation: Filterable (with results)
Use in Search Results Layered Navigation: Yes
Visible on Catalog Pages on Storefront: Yes
Used in Product Listing: Yes
4.Add attribute test_ddl to default Attribute set
5.Create new product in admin with SKU simple-null
6.Add Price, Stock, Category. Set test_ddl to Option 1
7.Save product
8.Open edit product form again and change test_ddl to empty value
9.Reindex all indexes bin/magento indexer:reindex Please make sure they all reindexed successfully
10.Open any graphql client and make query

Created new attribute

added on default test attribute

Created new product

edited product

Reindex all indexes

Actual result: We are not getting internal server error

Please refer the attached screenshots and let us know if we missed anything.

[zakdma]

Hey @engcom-Delta
Don't you see an error on your screenshot? https://prnt.sc/j2P8ngjnBGGS
Your request didn't return any result because of an indexation error. https://prnt.sc/T9jaBXFsuii6
That's why you don't see error 500

[mattijv]

Can confirm that we've run into this exact same issue. I think it might be easiest to hit if you don't use any filters in the custom_attributesV2 query, but just try getting all the attributes.

[mattijv]

@magento give me 2.4-develop instance