Question realated to the Spring Constructor Injection Code

[Question [] [questionpart2] 1 \ [1] ] 2

I am still learning the basic of spring core. So, i am for right now not able to solve this question. I have to pass test cases. Though i applied every knowledge i can it still didn't work. I know it's not that hard but still i cannot find the solution.

this is the error I am getting (I am using the compiler provided by the siteenter image description here)