我在Flutter上开发一个应用程序，但是当我在模拟器中运行模拟它时，IntelliJIdea给了我以下错误：

Error output from CocoaPods: ↳ Ignoring bindex-0.5.0 because its extensions are not built. Try: gem pristine bindex --version 0.5.0 Ignoring bootsnap-1.3.1 because its extensions are not built. Try: gem pristine bootsnap --version 1.3.1 Ignoring byebug-10.0.2 because its extensions are not built. Try: gem pristine byebug --version 10.0.2 [33mWARNING: CocoaPods requires your terminal to be using UTF-8 encoding. Consider adding the following to ~/.profile:

export LANG=en_US.UTF-8

[0m

Ignoring ffi-1.9.25 because its extensions are not built. Try: gem pristine ffi --version 1.9.25

Ignoring gem-wrappers-1.4.0 because its extensions are not built. Try: gem pristine gem-wrappers --version 1.4.0

Ignoring msgpack-1.2.4 because its extensions are not built. Try: gem pristine msgpack --version 1.2.4

Ignoring puma-3.12.0 because its extensions are not built. Try: gem pristine puma --version 3.12.0

Ignoring sqlite3-1.3.13 because its extensions are not built. Try: gem pristine sqlite3 --version 1.3.13

[!] Automatically assigning platform `ios` with version `8.0` on target `Runner` because no platform was specified. Please specify a platform for this target in your Podfile. See `https://guides.cocoapods.org/syntax/podfile.html#platform`.

Error running pod install

Error launching application on iPhone X.

有人可以帮忙提出建议吗？

谢谢