Enabling an EVC produces 500 Internal Server Error

After creating the EVC successfully, if you try to enable it, the REST API returns '500 Internal Server Error' .

Steps to reproduce:

Create a EVC:

prompt$ curl -X POST -H "Content-Type: application/json" -d '{
        "name": "VLAN_200_Test",
        "uni_a": {
            "interface_id": "00:00:00:00:00:00:00:fc:12",
            "tag": {
                "tag_type": "VLAN",
                "value": 200
            }
        },
        "uni_z": {
            "interface_id": "00:00:00:00:00:00:00:f7:2",
            "tag": {
                "tag_type": "VLAN",
                "value": 200
            }
        }
}' http://localhost:8181/api/kytos/mef_eline/v2/evc/
{"circuit_id":"861c600fc5524350bf4c91560954979f"}

Enable it:

prompt$ curl -X PATCH -H "Content-Type: application/json" -d '{
"enable": true
}' http://localhost:8181/api/kytos/mef_eline/v2/evc/861c600fc5524350bf4c91560954979f

Expected behavior:

The EVC gets enabled and OpenFlow flows installed on the switch

Actual behavior:

The rest API answer:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<title>500 Internal Server Error</title>
<h1>Internal Server Error</h1>
<p>The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.</p>

At the server console:

2020-06-04 22:00:56,395 - INFO [kytos.napps.kytos/mef_eline] (Thread-7628) EVC 861c600fc5524350bf4c91560954979f was synced to the storehouse.
2020-06-04 22:00:56,395 - ERROR [kytos.core.controller] (Thread-7628) Exception on /api/kytos/mef_eline/v2/evc/861c600fc5524350bf4c91560954979f [PATCH]
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1952, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.6/site-packages/flask_cors/extension.py", line 161, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1821, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.6/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1950, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "//var/lib/kytos/napps/kytos/mef_eline/main.py", line 206, in update
    evc.deploy()
  File "//var/lib/kytos/napps/../napps/kytos/mef_eline/models.py", line 464, in deploy
    self.enable()
TypeError: 'bool' object is not callable

Environment: kytos:2020.1b3 + kytos/mef_eline:2.3.1

kytos / mef_eline

Enabling an EVC produces 500 Internal Server Error #186