Demo Cocoapods 无法匹配第三方库版本

[stonesun1314]

[!] CocoaPods could not find compatible versions for pod "RongCloudIM/IMLib":
In Podfile:
RongCloudIM/IMLib (= 5.1.2.1)

None of your spec sources contain a spec satisfying the dependency: RongCloudIM/IMLib (= 5.1.2.1).

You have either:

• out-of-date source repos which you can update with pod repo update or with pod install --repo-update.
• mistyped the name or version.
• not added the source repo that hosts the Podspec to your Podfile.

[LemonChao]

本地cocoaPod repo update 一下，更新本地索引库

[RiversMaJianCheng]

本地cocoaPod repo update 一下，更新本地索引库

做了没有作用