Mac OS X wants to use system keychain when compiling the project

  1. Open Keychain Access.
  2. In the top-left corner, unlock the keychain (if it is locked).
  3. Choose the System keychain from the top-left corner.
  4. Find your distribution certificate and click the disclosure triangle.
  5. Double-click ‘Private key’ under your distribution certificate.
  6. In the popup, go to the Access Control tab.
  7. Select ‘Allow all applications to access this item’.
  8. Save the changes.
  9. Close all windows.
  10. Run the application.

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