seems like your mistake - check parameters you set for that method
For which method ?. Open Browser method?
You have a CustomKeyword, isStringBelongToList(), that you are not sending the correct data types of your parameters to. You are sending a String and ArrayList which it is not expecting. Unfortunately, you cut off the error message of what data types it is expecting, but those are also in the error message if you still have it (and you can check them in your CustomKeyword).
Note that String & ArrayList is not the same as ArrayList & String. You need correct data type in exact order.