Hi!
There are two problems in compilation:
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Your program looks for "Servo.h" library and founds 2 of them. It might be a copy of the same library in one of your directories (most probably), or even another library with the same name. Try to identify which one is the correct and delete the other. This problem is just an alert and it doesn´t stop the compilation at all because Arduino chooses one of them.
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The library "Firebase.h" looks for another archive called "ArduinoJson.h", but this file is missing in the place where it should be. Try to locate it and put in the same directory of the other archives. Make sure that the library you´re calling "FirebaseArduino.h" is the correct one.
Have fun! 