环信 CocoaPods could not find compatible versions for pod “HyphenateChat“:报错

[!] CocoaPods could not find compatible versions for pod "HyphenateChat":
? In snapshot (Podfile.lock):
??? HyphenateChat (= 4.1.1)

? In Podfile:
??? im_flutter_sdk (from `.symlinks/plugins/im_flutter_sdk/ios`) was resolved to 0.0.1, which depends on
????? HyphenateChat (= 4.2.0)

You have either:
?* out-of-date source repos which you can update with `pod repo update` or with `pod install --repo-update`.
?* changed the constraints of dependency `HyphenateChat` inside your development pod `im_flutter_sdk`.
?? You should run `pod update HyphenateChat` to apply changes you've made

解决办法：