fixed "ReadTimeout" and "ConnectionError" issues when attempting to refresh SiCKRAGE oauth2 token

fixed "'NoneType' object is not iterable" when retrieving languages from series provider
added retry count of 3 for SiCKRAGE oauth2 token refreshes

sickrage/core/api/__init__.py

@@ -163,15 +163,23 @@ class API(object):
  pass
 
  def refresh_token(self):
- try:
- if not self._token:
- return self.login()
+ retries = 3
+
+ for i in range(retries):
+ try:
+ if not self._token:
+ return self.login()
 
- self._token = sickrage.app.auth_server.refresh_token(self._token.get('refresh_token'))
- except KeycloakClientError:
- return self.login()
+ self._token = sickrage.app.auth_server.refresh_token(self._token.get('refresh_token'))
+ except KeycloakClientError:
+ return self.login()
+ except (requests.exceptions.ReadTimeout, requests.exceptions.ConnectionError):
+ if i > retries:
+ return False
+ time.sleep(0.2)
+ continue
 
- return True
+  return True
 
  def allowed_usernames(self):
  return self.request('GET', 'allowed-usernames')

sickrage/series_providers/thetvdb.py

@@ -186,6 +186,7 @@ class TheTVDB(SeriesProvider):
  resp = sickrage.app.api.series_provider.languages(provider=self.slug)
  if resp:
  return sorted(resp, key=lambda i: i['name'])
+ return {}
 
  def __repr__(self):
  return repr(self.cache)