TypeError: fetch failed during Pages Build

[11ty] Eleventy Error (CLI):
15:11:11.918    [11ty] 1. Error in your Eleventy config file 'eleventy.config.js'. (via EleventyConfigError)
15:11:11.918    [11ty] 2. fetch failed (via TypeError)
15:11:11.918    [11ty] 
15:11:11.919    [11ty] Original error stack trace: TypeError: fetch failed
15:11:11.919    [11ty]     at node:internal/deps/undici/undici:13178:13
15:11:11.919    [11ty]     at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
15:11:11.919    [11ty]     at async fetchPublicFigures (file:///opt/buildhome/repo/eleventy.config.js:230:20)
15:11:11.919    [11ty]     at async default (file:///opt/buildhome/repo/eleventy.config.js:516:27)

try {
    const response = await fetch('https://api.example.com/login');
    console.log('CMS Fetch API test successful:', response.status === 200);
    return true;
} catch (error) {
    console.error('Fetch API test failed:', error.message);
    return false;
}