FileList does not see a file from a field of type file. What to do?

Question

HTML

JS:
document.getElementById('create_company_btn').addEventListener("click", function() {

const FileInput = document.getElementById("id_photo");
console.log(FileInput.files);

}, false);

HTML:

, or rather it outputs FileInput.


And when you click on create_company_btn, an empty FileList array is written to the console.