Faulty selector
When the code is modified or you modify an action-state step, some test steps may go wrong. In this case, the test fails and you get an error message:
In this just delete the faulty step and execute the test again. You can record this step again and the test will be fixed. If further steps are faulty, delete them as well.
Faulty value
If the code is modified some values may go wrong. Considering the error message you will know what the problem is:
If there are more faults, then select the one you are ineterested in: