Can't change the mode of vi editor

Question

When I try to leave an inserting mode

:i

and press "Esc" key terminal put

^[

character in console and following run in inserting mode.
So I can't do something like:

:wq

What happening?

:i 
Entering ex input mode.
*****/usr/home/example/example2/cron_task.sh^[

Answer 1

:i CR is not the same command as i

To leave the latter, you enter: ESC

To leave the former, you enter: CR.CR