Rebuild Index Task options
This is longer than a comment .. so putting this as answer ...


  So, I have rebuild the index and everything was fine.


Rebuilding an index will update stats on the columns associated with that index.

There can be a lot of variables which might be different between 2 servers (2014 vs 2016) 


sys.configurations settings
compatiblity level of database
Any custom trace flag enabled
max memory setting
cost threshold of parallelism setting
max dop setting


You can run Best practice analyzer script from MSSQLTiger team or just run sp_Blitz from Brent Ozar's team.

As a side note: Use Ola's Index maintenance solution ... much flexible and well tested by a lot of organizations.

From your screenshot, it seems that you are setting the page fullness (FILLFACTOR) to 80% i.e. leave 20% free. You should monitor fragmentation (in your case 12% is nothing + you need to consider how many pages are in the index. I would suggest you to start looking into indexes with 1000+ pages). I would doubt that this will cause a major performance problem.