Ошибка при запуске воркера celery

Ошибка при запуске воркера celery

[2018-11-26 23:09:18,467: CRITICAL/MainProcess] Unrecoverable error: AttributeError("'float' object has no attribute 'item
s'",)                                                                                                                      
Traceback (most recent call last):                                                                                         
 File "/usr/local/lib/python3.6/site-packages/celery/worker/worker.py", line 205, in start                                
   self.blueprint.start(self)                                                                                             
 File "/usr/local/lib/python3.6/site-packages/celery/bootsteps.py", line 119, in start                                    
   step.start(parent)                                                                                                     
 File "/usr/local/lib/python3.6/site-packages/celery/bootsteps.py", line 369, in start                                    
   return self.obj.start()                                                                                                
 File "/usr/local/lib/python3.6/site-packages/celery/worker/consumer/consumer.py", line 317, in start                     
   blueprint.start(self)                                                                                                  
 File "/usr/local/lib/python3.6/site-packages/celery/bootsteps.py", line 119, in start                                    
   step.start(parent)                                                                                                     
 File "/usr/local/lib/python3.6/site-packages/celery/worker/consumer/consumer.py", line 593, in start                     
   c.loop(*c.loop_args())                                                                                                 
 File "/usr/local/lib/python3.6/site-packages/celery/worker/loops.py", line 91, in asynloop                               
   next(loop)                                                                                                             
 File "/usr/local/lib/python3.6/site-packages/kombu/asynchronous/hub.py", line 354, in create_loop                        
   cb(*cbargs)                                                                                                            
 File "/usr/local/lib/python3.6/site-packages/kombu/transport/redis.py", line 1040, in on_readable                        
   self.cycle.on_readable(fileno)                                                                                         
 File "/usr/local/lib/python3.6/site-packages/kombu/transport/redis.py", line 337, in on_readable                         
   chan.handlers[type]()                                                                                                  
 File "/usr/local/lib/python3.6/site-packages/kombu/transport/redis.py", line 724, in _brpop_read                         
   self.connection._deliver(loads(bytes_to_str(item)), dest)                                                              
 File "/usr/local/lib/python3.6/site-packages/kombu/transport/virtual/base.py", line 983, in _deliver                     
   callback(message)                                                                                                      
 File "/usr/local/lib/python3.6/site-packages/kombu/transport/virtual/base.py", line 632, in _callback                    
   self.qos.append(message, message.delivery_tag)                                                                         
 File "/usr/local/lib/python3.6/site-packages/kombu/transport/redis.py", line 149, in append                              
   pipe.zadd(self.unacked_index_key, time(), delivery_tag) \                                                              
 File "/usr/local/lib/python3.6/site-packages/redis/client.py", line 2263, in zadd                                        
   for pair in iteritems(mapping):                                                                                        
 File "/usr/local/lib/python3.6/site-packages/redis/_compat.py", line 123, in iteritems                                   
   return iter(x.items())                                                                                                 
AttributeError: 'float' object has no attribute 'items'                                                                  

pip3 install -U redis==2.10.6