Cannot read properties of undefined (reading 'toFixed')

This error typically occurs when you try to access a property or call a method on an undefined value. In this specific case, it seems that you are trying to use the `toFixed` method on an undefined value.

To fix this issue, you should check if the value you are trying to access is defined before using it. For example, you can use an `if` statement or a nullish coalescing operator (`??`) to provide a default value if the original value is undefined. Here's an example:

const num = undefined;
const fixedNum = (num ?? 0).toFixed(2);
console.log(fixedNum);

In this code snippet, the nullish coalescing operator `??` checks if `num` is undefined and provides a default value of 0 in that case. Then, the `toFixed` method is called on the resulting value.

Make sure to apply this concept to the specific variable or property causing the error in your code.