Syntax Error

What This Error Means

This error occurs when the JavaScript interpreter encounters a syntax that is not valid JSON. In this case, it's due to the presence of the 'let' keyword, which is used for variable declaration in JavaScript, but is not allowed in JSON.

Why It Happens

This error typically happens when a JavaScript function or variable is being passed as a string or object to a function that expects a JSON value. The 'let' keyword is not a valid JSON token and causes the parser to fail.

How to Fix It

1. 1To fix this error, you need to ensure that the code being passed is a valid JSON string. You can do this by removing any JavaScript code, such as variable declarations or expressions, that might be causing the issue. If you need to pass a JSON value with JavaScript code, consider using a library that can safely evaluate the code, such as JSON.parse() with a reviver function.

Example Code Solution

JSON.stringify({ let x = 5; });

JSON.stringify({ x: 5 });