Akonadi log message - how to resolve

[Andreas Gungl]

Hello,
in my Akonadi console window I found the following lines:
 

log_mixedmaildirresource: Incomplete ancestor chain for collection.
"Der angegebene Ordnername ist leer" collection: Collection ID: -744    remote ID: ""
   name: ""
   url: QUrl("akonadi:?collection=-744")
   parent: -307 ""
   resource: ""
   rights: QFlags(0x1|0x2|0x4|0x8|0x10|0x20)
   contents mime type: ()
   isVirtual: false
    CachePolicy:  
   inherit: true
   interval: -1
   timeout: -1
   sync on demand: false
   local parts: ()
    CollectionStatistics:
   count: -1
   unread count: -1
   size: -1
log_mixedmaildirresource: "Der angegebene Ordnername ist leer"
log_mixedmaildirresource: Incomplete ancestor chain for collection.
"Der angegebene Ordnername ist leer" collection: Collection ID: -751    remote ID: ""
   name: ""
   url: QUrl("akonadi:?collection=-751")
   parent: -307 ""
   resource: ""
   rights: QFlags(0x1|0x2|0x4|0x8|0x10|0x20)
   contents mime type: ()
   isVirtual: false
    CachePolicy:  
   inherit: true
   interval: -1
   timeout: -1
   sync on demand: false
   local parts: ()
    CollectionStatistics:
   count: -1
   unread count: -1
   size: -1
log_mixedmaildirresource: "Der angegebene Ordnername ist leer"
 
The message "Der angegebene Ordnername ist leer" means "the given folder name is empty".
Should I worry about that message? If yes, what can I do to fix it?
 
Best regards,
Andreas