not a question

OP solved the kata

you altered the return type of the method. it should return a List<Object>, not a List<Integer>. the input list can contain potentially any type, therefore so can the output, expect Strings

Where is my error ? :src/test/java/SolutionTests.java:43: error: incompatible types: List cannot be converted to List
List result = Kata.filterList(List.copyOf(input));
^
1 error