[CalendarServer-dev] Memcached errors

[Rahul Amaram]

While calendarserver 7.0 now works fine in Debian, I see the following 
errors in my error.log:

2015-10-25 23:24:29+0530 [-] [caldav-0] [PooledMemCacheProtocol,client] 
[twistedcaldav.memcachepool.MemCachePool#error] Memcache error: Invalid 
type for key: <type 'unicode'>, expecting a string; request: set 
cacheToken:/calendars/__uids__/0C8BDE62-E600-4696-83D3-8B5ECABDFD2E/calendar/ 
87c92808-420e-4778-af6e-45eee01d02a4
2015-10-25 23:24:29+0530 [-] [caldav-0] [PooledMemCacheProtocol,client] 
[twistedcaldav.memcachepool.MemCachePool#error] Memcache error: Invalid 
type for key: <type 'unicode'>, expecting a string; request: set 
cacheToken:/calendars/__uids__/0C8BDE62-E600-4696-83D3-8B5ECABDFD2E/ 
1b419724-321d-43b1-bbc2-c6c20f8389ce

Any clue on why I am getting these errors?

Thanks,
Rahul.