'Question for dummies. Error parameter on google sheets

i have a basic knowledge on sheets. I have typed this parameter to get result X and to therefore dry down horizontally, so i can get the data i wanted. I have created a raw sheets and then another empty so i can combine different sets of data. What wrong thing i am doing?

As you can see on the pictures, i somehow did the first one(hostname) but im stucked on the second one.

enter image description here

enter image description here



Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source