What it is mean?
Posting images of code and errors doesn't help at all,
quite the opposite, it even gets in the way,
because some people don't bother reading your post when they only see images of codes.
Use the correct tags, clicking on " < code > " on tools bar, and post your code and error messages.
And post your complete code and not a piece of code.
This type of error can have several causes, and by seeing your complete code, we will be able to eliminate some.
Especially because the most evident thing is the monitor manufacturer... 
Usually it means that you have to install the FirebaseArduino library.
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