不兼容的块指针类型问题ios 9

Question

不兼容的块指针类型发送

(void) start
{
   //some code
    __block NSError *dependentError = nil;
    [self.dependencies enumerateObjectsUsingBlock:^(CustomBaseOperationLoader *operation, NSUInteger idx, BOOL *stop) {

   if (operation.operationError != nil) {
    dependentError = [operation.operationError copy];
    *stop = YES;
      }
   }
      ];

}

  

不兼容的块指针类型发送'void   （^）（CustomBaseOperationLoader * __ strong，NSUInteger，BOOL *）'到   'void（^ _Nonnull）类型的参数（NSOperation * _Nonnull __strong，   NSUInteger，BOOL * _Nonnull）'