Error when doing API.graphql update - `Unhandled Rejection (Error): Invalid AST Node: undefined`

Describe the bug

This is what i was trying to do:

await API.graphql({ query: updateBlog, variables: { input } });

This is what i got:

I have no idea what this Unhandled Rejection (Error): Invalid AST Node: undefined means and the error is very unhelpful.

To Reproduce

https://github.com/sw-yx/talk-react-summit-demo-cms

add this to updateBlog:

    return async function (newValues: Blog) {
      const timestamp = new Date();
      const newBlog: Blog = {
        ...newValues,
        createdAt: oldValues.createdAt,
        updatedAt: timestamp,
      };
      setBlogs([...blogs.filter((x) => x.id !== oldValues.id), newBlog]);
      const { createdAt, updatedAt, ...input } = newBlog;
      console.log({ input }); // i have checked that the input here should be valid
      await API.graphql({ query: updateBlog, variables: { input } }); // the problem is here
    };
  }

Expected behavior

it should just work

What is Configured? If applicable, please provide what is configured for Amplify CLI:

• Which steps did you follow via Amplify CLI when configuring your resources.

• Which resources do you have configured?

  • If applicable, please provide your aws-exports file:

const awsmobile = { “aws_project_region”: “us-east-1”, “aws_appsync_graphqlEndpoint”: “https://hl5cqmuevvatjlsg7pidqllhpa.appsync-api.us-east-1.amazonaws.com/graphql”, “aws_appsync_region”: “us-east-1”, “aws_appsync_authenticationType”: “API_KEY”, “aws_appsync_apiKey”: “da2-ptzhxarenzdf7ljabwlkxbjdxu” };

export default awsmobile;

<details>
<summary><strong>Environment</strong></summary>

npx: installed 1 in 1.408s

System: OS: macOS Mojave 10.14.6 CPU: (8) x64 Intel® Core™ i7-8569U CPU @ 2.80GHz Memory: 65.03 MB / 16.00 GB Shell: 5.3 - /bin/zsh Binaries: Node: 12.18.0 - /usr/local/bin/node Yarn: 1.22.4 - /usr/local/bin/yarn npm: 6.14.7 - /usr/local/bin/npm Watchman: 4.9.0 - /usr/local/bin/watchman Browsers: Chrome: 85.0.4183.102 Firefox: 68.8.0 Safari: 13.1.2 npmPackages: @chakra-ui/core: ^1.0.0-rc.3 => 1.0.0-rc.3 @testing-library/jest-dom: ^4.2.4 => 4.2.4 @testing-library/react: ^9.3.2 => 9.5.0 @testing-library/user-event: ^7.1.2 => 7.2.1 @types/jest: ^24.0.0 => 24.9.1 @types/node: ^12.0.0 => 12.12.58 @types/react: ^16.9.0 => 16.9.49 @types/react-dom: ^16.9.0 => 16.9.8 aws-amplify: ^3.2.0 => 3.2.0 formik: ^2.1.5 => 2.1.5 react: ^16.13.1 => 16.13.1 react-dom: ^16.13.1 => 16.13.1 react-scripts: 3.4.3 => 3.4.3 typescript: ^4.0.2 => 4.0.2 npmGlobalPackages: @11ty/eleventy: 0.11.0 @aws-amplify/cli: 4.26.1-flutter-preview.0 @prisma/cli: 2.6.1 diff-so-fancy: 1.3.0 expo-cli: 3.21.5 generator-code: 1.2.19 netlify-cli: 2.53.0 npm: 6.14.7 vsce: 1.77.0 yo: 3.1.1

</details>

[sw-yx]

i have discovered this is my fault - i have another function that is also called updateBlog and that was being shadowed unintentionally. sorry for the noise

[github-actions[bot]]

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