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在iPhone X上以调试模式启动lib / main.dart ...运行pod安装... CocoaPods的输出：准备中
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`
-> Fetching podspec for `cloud_firestore` from `.symlinks/plugins/cloud_firestore/ios`
-> Fetching podspec for `firebase_core` from `.symlinks/plugins/firebase_core/ios`
-> Fetching podspec for `shared_preferences` from `.symlinks/plugins/shared_preferences/ios`
-> Fetching podspec for `url_launcher` from `.symlinks/plugins/url_launcher/ios`
Resolving dependencies of `Podfile`
[!] CocoaPods could not find compatible versions for pod "Firebase/Core":
In Podfile:
cloud_firestore (from `.symlinks/plugins/cloud_firestore/ios`) …