How do I debug this error in my Taro application?

Use your browser's developer tools to inspect the call stack. This will help you pinpoint the exact line of code where the error is occurring. Also, add conditional checks (`typeof process !== 'undefined'`) strategically in your code to isolate the problem area. Check your `taro.config.js` file to ensure you haven't accidentally tried to access environment variables outside of the client-side context.