ios项目Error launching application on iPhone Xʀ. 编译出错

[equipmentseek]

Launching lib/main.dart on iPhone Xʀ in debug mode...
Removing obsolete reference to flutter_assets from Runner.app
CocoaPods' output:
↳
Preparing
Analyzing dependencies
Inspecting targets to integrate
Using ARCHS setting to build architectures of target Pods-Runner: (``)
Fetching external sources
-> Fetching podspec for Flutter from `.symlinks/flutter/ios`
[!] No podspec found for `Flutter` in `.symlinks/flutter/ios`
...

Error output from CocoaPods:
↳
[!] <PBXGroup UUID=97C146E51CF9000F007C117D> attempted to initialize an object with an unknown UUID. CF3B75C9A7D2FA2A4C99F110 for attribute: children. This can be the result of a merge and the unknown UUID is being discarded.
[!] 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 Xʀ.