Reason: SyntaxError: Cannot use import statement outside a module

The reason for the SyntaxError you encountered is that the "import" statement is only allowed to be used within a JavaScript module. In order to use the "import" statement, you need to ensure that your script file is being treated as a module.

To fix this error, you have a few options:

1. Use the "type" attribute in your HTML script tag:

   <script type="module" src="your-script-file.js"></script>

2. If you are running your code in a Node.js environment, you can use the "--experimental-modules" flag when executing your script:

   node --experimental-modules your-script-file.js

3. If you are using a bundler like Webpack or Babel, make sure you have configured it to handle the ES modules syntax and transform it into a compatible format for the browser or Node.js.

By using one of these approaches, you should be able to resolve the SyntaxError and successfully use the "import" statement in your JavaScript code.