ios - coredata metaData fetch error -

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in ios app, in statement

 nsdictionary *x = [nspersistentstorecoordinator       metadataforpersistentstoreoftype:nssqlitestoretype       url:<url> error:&error];

i getting following error , x nil:

"sqlite error code:3850, 'not error' errno:9"

what mean?

it 

#define sqlite_interrupt    9   /* operation terminated sqlite3_interrupt()*/

(source)


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