Yank paste not working after trying to map clipboard to register

Question

I tried making clipboard work with yank paste. And now for some reason normal V+y and p doesn't work as intended anymore. for example:

{
    pb.push(to_string(pb.top()).size());
    pb.pop();
}

normal yanking pasting not working here on the pop line. Here's the vimrc:

set clipboard=unnamed
set nocompatible
filetype on
syntax on
set smarttab
set autoindent
set smartindent
set cindent shiftwidth=4
set exrc
set mouse=a
set tabstop=4
set backspace=indent,eol,start
set clipboard=unnamedplus
set hls
set number relativenumber
set numberwidth=2
set cpoptions+=n
"vnoremap<C-c> "+y
"nmap<C-p> "+p

I've commented out the mapping thinking that would work. It didn't. Help would be appreciated.