I used cocoscreator and Xcode to build and compile the app. When I submit for testing, All local validations are passed but after uploading, I received an email from apple:
We have discovered one or more issues with your recent delivery for "Double Fidget Spinners". To process your delivery, the following issues must be corrected: Non-public API usage: The app references non-public symbols in DFS: _getcontext, _makecontext, _setcontext If method names in your source code match the private Apple APIs listed above, altering your method names will help prevent this app from being flagged in future submissions. In addition, note that one or more of the above APIs may be located in a static library that was included with your app. If so, they must be removed.
Any idea please.