How can I debug this error to pinpoint the exact location of the problematic import?

The error message usually provides a stack trace. Examine the stack trace carefully to identify the file and line number where the 'fs' module is being imported or used. Use your IDE's debugging tools to step through the code and understand how the import is happening. Also, use `grep` or a similar tool to search your project for instances of `require('fs')` or `import fs from 'fs'`.