Find and Find All kws cannot handle empty root node argument#46
Description
If earlier Find operations fail for wanted root node there comes following kind of exception when using that as root node for Find and Find All kws:
java.lang.RuntimeException: java.lang.IllegalArgumentException: java.lang.ClassCastException@110f4f0e
It should fail with proper error message that not valid root argument.
There should be acceptance test in our test set for this.