======================================================================                                                            
ERROR: revision_log_by (ui.tests.test_backend.BackendTestCase)                                                                  
----------------------------------------------------------------------                                                          
Traceback (most recent call last):                                                                                             
  File "/home/jbertran/swh-environment/swh-web-ui/swh/web/ui/tests/test_backend.py", line 490, in revision_log_by              
    actual_log = backend.revision_log_by(1, 'refs/heads/master', None)                                                        
  File "/home/jbertran/swh-environment/swh-web-ui/swh/web/ui/backend.py", line 202, in revision_log_by                       
    ts)                                                                                                                       
  File "/home/jbertran/swh-environment/swh-storage/swh/storage/api/client.py", line 113, in revision_log_by                  
    'limit': limit})                                                                                                       
  File "/home/jbertran/swh-environment/swh-storage/swh/storage/api/client.py", line 27, in post                          
    response = self.session.post(                                                                                       
AttributeError: 'RemoteStorageAdapter' object has no attribute 'session'