[!] CDN: trunk URL couldn't be downloaded: https://cdn.cocoapods.org/CocoaPods-version.yml Response: URL using bad/illegal format or missing URL
## fix error (base) sungmin@sungminyunui-MacBookPro ios % pod install Analyzing dependencies firebase_analytics: Using Firebase SDK version '8.11.0' defined in 'firebase_core' firebase_auth: Using Firebase SDK version '8.11.0' defined in 'firebase_core' firebase_core: Using Firebase SDK version '8.11.0' defined in 'firebase_core' firebase_messaging: Using Firebase SDK version '8.11.0' defined in 'firebase_core' firebase_remote_config: Using Firebase SDK version '8.11.0' defined in 'firebase_core' [!] CDN: trunk URL couldn't be downloaded: https://cdn.cocoapods.org/CocoaPods-version.yml Response: URL using bad/illegal format or missing URL (base) sungmin@sungminyunui-MacBookPro ios % pod repo remove trunk Removing spec repo `trunk` (base) sungmin@sungminyunui-MacBookPro ios % pod install --repo-update Updating local specs repositories $ /usr/local/bin/git -C /Users/sungmin/.cocoapods/repos/cocoapo