This going to be 100% working fix for you. At first analyze the issue. The error state that there are fre files that are missing(Actually one). As of the issue probably arc folder is missing in 14.3(public&beta) release candidates. Things to do Head over to this location NOTE: Public candidate # If public release candidate (14.3) cd /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib NOTE: Beta candidate # If beta release candidate (14.3 beta) cd /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib Create a dir with sudo permissions(Won't allow you without sudo) sudo mkdir arc cd arc Now clone(I personally recommend)/download a github repo Libarclite-Files git clone https://github.com/kamyarelyasi/Libarclite-Files.git . Grand execution permissions for everything in it. sudo chmod +x * Now try pod deintegrade rm -rf podfile.lock pod install Ideally, after this pod installs it should work. If not follow this(But need to do it every time you deintegrate and install them) Go to Pods\Target Support Files\Pods-Runner or Pods-App Open Pods-Runner-frameworks.sh or Pods-App-frameworks.sh in an editor Search for source="$(readlink "${source}")"(Ideally at line:45) And update it to source="$(readlink -f "${source}")" NOTE: This is one time setup. So you don't need to change your app configs because of your dev env. Reference: 725300#749767022(Comment)

This going to be 100% working fix for you. At first analyze the issue. The error state that there are fre files that are missing(Actually one). As of the issue probably arc folder is missing in 14.3(public&beta) release candidates. Things to do Head over to this location NOTE: Public candidate # If public release candidate (14.3) cd /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib NOTE: Beta candidate # If beta release candidate (14.3 beta) cd /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib Create a dir with sudo permissions(Won't allow you without sudo) sudo mkdir arc cd arc Now clone(I personally recommend)/download a github repo Libarclite-Files git clone https://github.com/kamyarelyasi/Libarclite-Files.git . Grand execution permissions for everything in it. sudo chmod +x * Now try pod deintegrade rm -rf podfile.lock pod install Ideally, after this pod installs it should work. If not follow this(But need to do it every time you deintegrate and install them) Go to Pods\Target Support Files\Pods-Runner or Pods-App Open Pods-Runner-frameworks.sh or Pods-App-frameworks.sh in an editor Search for source="$(readlink "${source}")"(Ideally at line:45) And update it to source="$(readlink -f "${source}")" NOTE: This is one time setup. So you don't need to change your app configs because of your dev env.