Apple MACh-O Linker & Ditto Error - Xcode 8

Apple Mach-O Linker Error - Xcode (Swift)

I tried everything suggested on the internet for the same issue and nothing resolved this. I fully re-installed Xcode and Cocoapods, set up the project exactly the same as before and it is now working.

Apple Mach -O Linker (Id) Error?

This problem has different solutions , one of them is to set Enable Bitcode to No . ( I don't know why by default it is Yes )

Sample Image

This problem is a ghost like problem . Clearing Cache , Restarting Xcode , Simulator and MAC ,Ensuring proper linking of Frameworks ,Changing app Architecture or , Sometimes just doing nothing can solve this problem .

How to fix Apple Mach-O Linker Error Group issue in xcode?

Run react-native link this will all for you.
Or use these steps

Step 1

.xcodeproj file inside it's folder. Drag this file to your project on Xcode (usually under the Libraries group on Xcode)

Step 2

Click on your main project file (the one that represents the .xcodeproj) select Build Phases and drag the static library from the Products folder inside the Library you are importing to Link Binary With Libraries

Step 3

project's file, select Build Settings and search for Header Search Paths. There you should include the path to your library (if it has relevant files on subdirectories remember to make it recursive, like React.

refer this one
link

Update to XCode 8.3.1: Apple Mach-O Linker Error Group with Snapkit error

Finally solved by removing ~/Library/Developer/Xcode/DerivedData.

How to fix Apple Mach-O Linker Error Group - clang: error: linker command failed with exit code 1 (use -v to see invocation) Error

Follow carefully the instructions in this Technical Q&A. I think you might have not done step 2 in the first figure, where you need to select "Manual/None" in the "Codegen" dropdown.

How to fix apple match-o linker id errors in unity project build using xcode 8

Please check FacebookSDK is in on the same project folder or check the path is correct this error indicates you have missing library or framework.
please this post it will give you better understanding
Apple linker command fail