node environments/environment.ts' is not a module.

This error message usually occurs when you try to import a module that does not exist or is not properly exported. To fix this issue, you should check the following:

1. Make sure that the file 'environments/environment.ts' exists in your project directory.
2. Check if there are any syntax errors or typos in the import statement.
3. Verify that the module is properly exported in 'environments/environment.ts'. You can do this by exporting it using the 'export' keyword like this:

export const environment = {
  production: false,
  apiUrl: 'http://localhost:3000/api'
};

If none of these solutions work, you can try deleting the 'node_modules' folder and running 'npm install' to reinstall all the dependencies.