无法使用RestKit-0.20.3调用NSManagedObject类“ XYX”上的指定初始化程序

Question

I am working with RestKit-0.20.3 and faced a problem I have a Student table in database. For getting student history perform get api call, url like this https://xyz.com/api/getStudentHistory?x=a&y=b&z=c with some parameter. Using this method

 [[RKObjectManager sharedManager] getObjectsAtPath:path parameters:param success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult)

In ' path' parameter passing- path = https://xyz.com/api/getStudentHistory

I got this error when server send response.

CoreData: error: Failed to call designated initializer on NSManagedObject class ’Student’ 

After that I am getting this message and application become crash.

Uncaught exception [<Student 0xd36b3e0> valueForUndefinedKey:]: the entity (null) is not key value coding-compliant for the key "notes".
     Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<Student 0xd36b3e0> valueForUndefinedKey:]: the entity (null) is not key value coding-compliant for the key "notes".'

Answer 1

After R&D and spending a lot of time got a clue from here The entity (null) is not key value coding-compliant for the key "title"

Simply replace my path parameter from path = https://xyz.com/api/getStudentHistory to path = /api/getStudentHistory in method

[[RKObjectManager sharedManager] getObjectsAtPath:path parameters:param success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult)

Now my problem solved……:)