ios - Attempted to dereference an invalid ObjC Object or send it an unrecognized selector -

ios - Attempted to dereference an invalid ObjC Object or send it an unrecognized selector -

i new ios inquire checking dictionary of next in output window this:

homecoming [[[fbmodelmanager sharedmodelmanager] getmodeldictionary:kmodellistings] count]; po [[[fbmodelmanager sharedmodelmanager] getmodeldictionary] count]

but giving me error

error: execution interrupted, reason: attempted dereference invalid objc object or send unrecognized selector.

the process has been returned state before look evaluation. syntax wrong or what?

ios