Uncaught ReferenceError item is not defined

This error message generally means that you are trying to reference a variable or object that has not been defined or declared in your code.

For example, if you have the following code:

console.log(item);

and there is no variable or object named "item" defined earlier in your code, you would receive the "Uncaught ReferenceError: item is not defined" error message.

To resolve this error, you need to make sure that you have declared and defined any variables or objects that you are trying to reference in your code.