indexQueryFactory tries to run Object.keys(null) what causes error

[WojciechKasprzyk]

Before opening, please confirm:

• I have searched for duplicate or closed issues and discussions.
• I have read the guide for submitting bug reports.
• I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.

JavaScript Framework

Angular

Amplify APIs

GraphQL API

Amplify Version

v6

Amplify Categories

api

Backend

Amplify Gen 2

Environment information

  System:
    OS: macOS 14.6.1
    CPU: (10) arm64 Apple M1 Pro
    Memory: 101.64 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.2.0 - /usr/local/bin/node
    npm: 10.7.0 - /usr/local/bin/npm
    bun: 1.0.0 - ~/.bun/bin/bun
  Browsers:
    Chrome: 129.0.6668.101
    Safari: 17.6
    Safari Technology Preview: 18.0
  npmPackages:
    @angular-devkit/build-angular: ^18.2.1 => 18.2.1 
    @angular-slider/ngx-slider: 18.0.0 => 18.0.0 
    @angular/animations: ^18.2.1 => 18.2.1 
    @angular/cli: ^18.2.1 => 18.2.1 
    @angular/common: ^18.2.1 => 18.2.1 
    @angular/compiler: ^18.2.1 => 18.2.1 
    @angular/compiler-cli: ^18.2.1 => 18.2.1 
    @angular/core: ^18.2.1 => 18.2.1 
    @angular/forms: ^18.2.1 => 18.2.1 
    @angular/platform-browser: ^18.2.1 => 18.2.1 
    @angular/platform-browser-dynamic: ^18.2.1 => 18.2.1 
    @angular/router: ^18.2.1 => 18.2.1 
    @aws-amplify/backend: ^1.1.1 => 1.1.1 
    @aws-amplify/backend-cli: ^1.2.5 => 1.2.5 
    @aws-amplify/ui-angular: ^5.0.19 => 5.0.28 
    @ngrx/effects: ^18.0.2 => 18.0.2 
    @ngrx/entity: ^18.0.2 => 18.0.2 
    @ngrx/eslint-plugin: ^18.0.2 => 18.0.2 
    @ngrx/operators: ^18.0.2 => 18.0.2 (18.0.1)
    @ngrx/schematics: ^18.0.2 => 18.0.2 
    @ngrx/store: ^18.0.2 => 18.0.2 
    @ngrx/store-devtools: ^18.0.2 => 18.0.2 
    @types/jasmine: ~5.1.4 => 5.1.4 
    aws-amplify: ^6.6.3 => 6.6.3 
    aws-amplify/adapter-core:  undefined ()
    aws-amplify/analytics:  undefined ()
    aws-amplify/analytics/kinesis:  undefined ()
    aws-amplify/analytics/kinesis-firehose:  undefined ()
    aws-amplify/analytics/personalize:  undefined ()
    aws-amplify/analytics/pinpoint:  undefined ()
    aws-amplify/api:  undefined ()
    aws-amplify/api/server:  undefined ()
    aws-amplify/auth:  undefined ()
    aws-amplify/auth/cognito:  undefined ()
    aws-amplify/auth/cognito/server:  undefined ()
    aws-amplify/auth/enable-oauth-listener:  undefined ()
    aws-amplify/auth/server:  undefined ()
    aws-amplify/data:  undefined ()
    aws-amplify/data/server:  undefined ()
    aws-amplify/datastore:  undefined ()
    aws-amplify/in-app-messaging:  undefined ()
    aws-amplify/in-app-messaging/pinpoint:  undefined ()
    aws-amplify/push-notifications:  undefined ()
    aws-amplify/push-notifications/pinpoint:  undefined ()
    aws-amplify/storage:  undefined ()
    aws-amplify/storage/s3:  undefined ()
    aws-amplify/storage/s3/server:  undefined ()
    aws-amplify/storage/server:  undefined ()
    aws-amplify/utils:  undefined ()
    bootstrap: ^5.3.3 => 5.3.3 
    jasmine-core: ~5.2.0 => 5.2.0 (4.6.1)
    karma: ~6.4.4 => 6.4.4 
    karma-chrome-launcher: ~3.2.0 => 3.2.0 
    karma-coverage: ~2.2.1 => 2.2.1 
    karma-coverage-coffee-example:  1.0.0 
    karma-jasmine: ~5.1.0 => 5.1.0 
    karma-jasmine-html-reporter: ~2.1.0 => 2.1.0 
    ngx-toastr: ^19.0.0 => 19.0.0 
    rxjs: ~7.8.1 => 7.8.1 
    rxjs/ajax:  undefined ()
    rxjs/fetch:  undefined ()
    rxjs/operators:  undefined ()
    rxjs/testing:  undefined ()
    rxjs/webSocket:  undefined ()
    swiper: ^10.3.1 => 10.3.1 
    tslib: ^2.7.0 => 2.7.0 (2.6.3, 2.0.3, 2.4.1, 2.2.0, 2.3.1, 1.14.1)
    typescript: ~5.5.4 => 5.5.4 (4.4.4, 4.9.5)
    zone.js: ~0.14.10 => 0.14.10 
  npmGlobalPackages:
    @angular/cli: 18.2.6
    @aws-amplify/cli: 12.12.4
    @ionic/cli: 7.2.0
    cordova-res: 0.15.4
    cordova: 12.0.0
    corepack: 0.28.1
    jest: 29.7.0
    n: 9.2.3
    npm: 10.7.0
    ts-node: 10.9.2

Describe the bug

If API return data equals null then indexQueryFactory tries to run Object.keys(null) which causes error. It's funny that you mentioned in the comment that data can be null and you mentioned that you check it but actually, it is not.

null !== undefined so Object.keys is called with invalid argument.

Expected behavior

There should be a condition like data != null to check both null and undefined.

Reproduction steps

Call API that returns data: null

Code Snippet

// Put your code below this line.

Log output

// Put your logs below this line

aws-exports.js

No response

Manual configuration

No response

Additional configuration

No response

Mobile Device

No response

Mobile Operating System

No response

Mobile Browser

No response

Mobile Browser Version

No response

Additional information and screenshots

No response

[WojciechKasprzyk]

@chachasammy is it a scam? @aws-amplify-ops Could you ban it?

[stocaaro]

@WojciechKasprzyk Thanks for calling that out! Deleted/reported.

[chrisbonifacio]

Hi @WojciechKasprzyk 👋 thanks for raising this issue and we've taken action against the comment you pointed out.

Regarding this issue, we will reproduce with the conditions you mentioned and look into addressing it

[chrisbonifacio]

Hi @WojciechKasprzyk just curious, could you share the server code that is returning potentially null values? I'm curious if this is caused by an auto-generated query/mutation of ours or if it is custom business logic in a custom query/mutation.

[WojciechKasprzyk]

Hi @chrisbonifacio Unfortunately I cannot, but as far as I know there is a model issue the causes API error an then responses null data.
Anyway, what does it change? The code should be prepared for null as it is described in comment 😄

[chrisbonifacio]

@WojciechKasprzyk I'm trying to figure out how to reproduce the behavior so we can address it but I can't think of a scenario where a null might be in the response. Is the shape of the response an array of items and some null values in the array? Or is the server returning only null?

[WojciechKasprzyk]

This is the response I get

[chrisbonifacio]

oh okay, I believe that particular error message means that the query is asking for fields that don't exist on the schema.

Can you confirm that parentGci and parentChannelID are defined as fields on the Category model?

[WojciechKasprzyk]

Yes, they are both type of id on the Category model

[chrisbonifacio]

Is that schema deployed and up to date in the AppSync console?

[WojciechKasprzyk]

it was not in sync, now there is no this error - I get different ehhh... 😄 But still the condition in amplify codebase is invalid

[chrisbonifacio]

We will look into the discrepancy in the codebase.

In the meantime, are you getting a different error now or are you unblocked at this time?

[WojciechKasprzyk]

Oh, I'm unblocked at this time, thank you very much @chrisbonifacio for helping me, I really appreciate 😄