So I am using only powerMockRunner in my service to write UT. I have created mock of my class like below

mockStatic(MyUtilities.class);

Also I have used this class in @PrepareForTest like below

@PrepareForTest({MyUtilities.class})

And also used when statement for the same to create a mock of method that is called from my target method like below

when(MyUtilities.getUserAccessableWorkspacesIds(111,0, "SessionID")).thenReturn((new ArrayList<>()));

Now the issue is I am getting error of below

java.lang.IllegalStateException: Failed to transform class with name com.src.common.utils.MyUtilities. Reason: cannot find com.src.file.domain.FileInfo

MyUtilities is presend in another service inside which I have a call for com.src.file.domain.FileInfo(which is in third service). Please suggest how can I fix this issue .