iOS 12 crash

[prdvrs]

The app works fine in all other versions other than iOS 12. when tested the app in iOS 12 beta it gets crashed with below error
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'The fetch request's entity 0x600002ecc9a0 'Section' appears to be from a different NSManagedObjectModel than this context's'
*** First throw call stack:
(
0 CoreFoundation 0x000000010f4c373b __exceptionPreprocess + 331
1 libobjc.A.dylib 0x000000010ea68735 objc_exception_throw + 48
2 CoreData 0x000000010ccbca4a -[NSManagedObjectContext executeFetchRequest:error:] + 5418
3 MobileDirectory 0x000000010b75adaa __33-[RKEntityByAttributeCache load:]_block_invoke + 106
4 CoreData 0x000000010ccfedc1 developerSubmittedBlockToNSManagedObjectContextPerform + 161
5 libdispatch.dylib 0x00000001116f06fa _dispatch_client_callout + 8
6 libdispatch.dylib 0x00000001116f7bdb _dispatch_lane_serial_drain + 791
7 libdispatch.dylib 0x00000001116f8842 _dispatch_lane_invoke + 428
8 libdispatch.dylib 0x00000001117028b7 _dispatch_workloop_worker_thread + 733
9 libsystem_pthread.dylib 0x0000000111ad1fd2 _pthread_wqthread + 980
10 libsystem_pthread.dylib 0x0000000111ad1be9 start_wqthread + 13
)
libc++abi.dylib: terminating with uncaught exception of type NSException

[valeriomazzeo]

#2539 should have fixed this.

Did you try pulling the development branch?