How does whitespace affect the parsing of JSON and how can I handle whitespace errors?

While valid JSON allows for whitespace, the "Unexpected token" error can sometimes be triggered by unexpected whitespace at the beginning of the JSON string, before the opening curly brace or square bracket. Trim leading whitespace from the string before parsing it using the `.trim()` method in JavaScript or similar functions in other programming languages. Ensure that the server is not adding any leading whitespace to the JSON response.