- Use the `$(inherited)` flag, or - Remove the build settings from the target. CocoaPod Swift3 pod update error

1. Target - > building settings- >ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES, Value type is Boolean, click on the other, change the value to $(inherited)
2. perform - pod update
3. Done

This worked for me:

https://github.com/CocoaPods/CocoaPods/issues/5981#issuecomment-363591574

1. Go to Build Settings
2. Search for "Runpath Search Paths".
3. Double click the value field and add $(inherited)
4. Product -> Clean Build Folder

Run the cocoapods command in the terminal and things should go fine this time.

1. Target - > build settings- > BuildOptions-> Validate Build Product, Here the Debug value type is Boolean, Click here to change the value No to YES

2. Perform - Build Clean

3. Done