我正在尝试在Ipad上构建一个统一的ios版本，我遵循了here的步骤，现在当我尝试构建终端时会抛出此错误，有关如何解决此问题的任何想法。预先感谢
Xcode的输出：
=== BUILD TARGET UnityFramework OF PROJECT Unity-iPhone WITH CONFIGURATION Debug ===
Undefined symbols for architecture arm64:
"_onUnityMessage", referenced from:
_UnityMessageManager_onUnityMessage_m8A904C01129EA827FDD76B08B34FAF9A6C4B5E36 in
Assembly-CSharp.o
(maybe you meant:
_UnityMessageManager_onUnityMessage_m8A904C01129EA827FDD76B08B34FAF9A6C4B5E36)
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Could not build the precompiled application for the device.
Error launching application on Arpita’s iPad.