Mysql: Error While Loading Shared Libraries

I am trying to install mysql 5.5.56 and i follow this tutorial.

now mysql is up and running, but when i am trying to run the command mysql --version

it is showing the following error mysql: error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory

i have install in on ubuntu 20

can anyone please tell me where is the problem and how can i get out of this.

Thank you