Backspace on vim doesn't work after I create a ~/.vimrc file

I'm using vim on macOS, I did different tests.  Backspace doesn't work in vim with my ~/.vimrc. I saw that when I remove my ~/.vimrc file everything is ok, but whatever I write in it (any writable character or a set nu or anything.  When I :wq and come back to anyfile with vim, I cannot use backspace anymore. I tried to brew uninstall vim and reinstall it many times, and it doesn't change this behaviour.  Without ~/.vimrc file, everything's perfect, but with my ~/.vimrc it doesn't behave as expected.