Rvt.sh error

I actually forked it and worked on myself. I used this in termux after I need to revert the program.  But, it doesn't allow me to enter the code in terminal. I got some error in my mobile. I too work ing on that error.. we'll find it....


ex: When I enter the bash . It's blinks in some other part ...
when I enter it doesn't show the command only a black screen appears.....

tq happy coding