Why dialout not vagrant owns shared files

I have a manor setup with the file sharing configuration below:

# Register All Of The Configured Shared Folders
settings["folders"].each do |folder|
  config.vm.synced_folder folder["map"], folder["to"], type: folder["type"] ||= nil, nfs: true, :mount_options => ['nolock,vers=3,udp,noatime']
end

      

        
        
        
      

    

After that, ownership of the shared files becomes dialout

from vagrant

. Is this the reason I am getting 502 Bad Gateway

on ajax request?