error while loading shared libraries: libncurses.so.5: wrong ELF class: ELFCLASS64

This error occurs when a program is trying to load a 32-bit version of the libncurses library on a 64-bit system or vice versa.

To fix this issue, you need to install the correct version of the library for your system.

For example, if you are running a 64-bit version of Linux, you should install the 64-bit version of the library using the command:

sudo apt-get install libncurses5:i386

If you are running a 32-bit version of Linux, you should install the 32-bit version of the library using the command:

sudo apt-get install libncurses5

Once you have installed the correct version of the library, try running the program again. It should now load the library without any errors.