Error while trying to use const int std::array

Why I'm getting the following error when I try to use an const int std::array? I had to replace "<" for "<\" in the error message to show it correctly:

#include <array>
#include <iostream>

using namespace std;

int main() {
    array<const int, 4> vals;

    return 0;
}

test.cpp: In function ‘int main()’:

test.cpp:7:22: error: use of deleted function ‘std::array::array()’

array<\const int, 4> vals; ^~~~

In file included from test.cpp:1:0: /usr/include/c++/7.3.0/array:94:12: note: ‘std::array<\const int, 4>::array()’ is implicitly deleted because the default definition would be ill-formed: struct array ^~~~~

/usr/include/c++/7.3.0/array:94:12: error: uninitialized const member in ‘struct std::array<\const int, 4>’

/usr/include/c++/7.3.0/array:110:56: note: ‘const int std::array<\const int, 4>::_M_elems [4]’ should be initialized typename _AT_Type::_Type _M_elems; ^~~~~~~~