booking.pdf = PDFTemplater.makePDF(booking)
 
     for collaborator in users_field:  # list of Users (not UserProfile)
-        booking.collaborators.add(collaborator.user)
+        booking.collaborators.add(collaborator)
 
     booking.save()
 
 
 from workflow.views import login
 from booking.forms import QuickBookingForm
 from booking.quick_deployer import create_from_form, drop_filter
+import traceback
 
 
 def quick_create_clear_fields(request):
                                           "Check Account->My Bookings for the status of your new booking")
                 return redirect(reverse('booking:booking_detail', kwargs={'booking_id': booking.id}))
             except Exception as e:
+                print("Error occurred while handling quick deployment:")
+                traceback.print_exc()
+                print(str(e))
                 messages.error(request, "Whoops, an error occurred: " + str(e))
                 context.update(drop_filter(request.user))
                 return render(request, 'booking/quick_deploy.html', context)