Make views vim
augroup myView
autocmd!
autocmd BufWinLeave *.* mkview
autocmd BufWinEnter *.* silent! loadview
augroup END
" the '!' mark helped me get rid of the error on startup
" and if you want to be more explicit make custom function
" assuming your error code is E484 eg:
" Error detected while processing BufWinEnter Autocommands for "*":
" E484: Can't open file /home/jan/.local/share/nvim/view/~=+index=
function! LoadView() abort
try
loadview
catch /E484/
return
endtry
endfunction
autocmd BufWinEnter * call LoadView()