Could someone tell me what this error means and how to fix it / avoid it.

BJP5 Exercise 11.10: removeEvenLength Author: Marty Stepp (on 2019/09/19) Write a method removeEvenLength that takes a Set of strings as a parameter and that removes all of the strings of even length from the set. For example, if your method is passed a set containing the following elements: ["foo", "buzz", "bar", "fork", "bort", "spoon", "!", "dude"] Your method should modify the set to store the following elements (the order of the elements does not matter): ["foo", "bar", "spoon", "!" ] Type your solution here: This is a method problem. Write a Java method as described. Do not write a complete program or class; just the method(s) above. Sound F/X Highlighting You passed 2 of 3 tests. Try again