TypeError: Cannot read properties of undefined (reading 'filter')

This error message is indicating that you are trying to access the 'filter' property of an undefined value. This means that the variable or object you are trying to use the 'filter' method on has not been defined or is not an array.

To fix this error, you should check your code to ensure that you are properly defining and initializing any variables or objects that you are using the 'filter' method on. Also, make sure that the variable or object is actually an array before attempting to use the 'filter' method on it.