Blocks file upload by users

The plugin successfully allows you to change avatars. But it blocks users from downloading files to articles.

I have created a form for adding posts (to the front end) using the “Advanced Custom Fields”. After activating the “WP User Avatar” plugin, the file upload function stopped working, writes: “Unfortunately, you are not allowed to attach files to this record.”

I tried to add the code in function.php:

add_action('admin_init', 'setup_author_role');
function setup_author_role() {
  $role = get_role( 'author' );
  $role->add_cap('upload_files');
  $role->add_cap('edit_published_posts');
  $role->add_cap('edit_others_posts');
  $role->add_cap('publish_posts');
  }
add_action('admin_init', 'setup_contributor_role');

function setup_contributor_role() {
  $role = get_role( 'contributor' );
  $role->add_cap('upload_files');
  $role->add_cap('edit_published_posts');
  $role->add_cap('edit_others_posts');
  $role->add_cap('publish_posts');
  }  
?>

did not help ??