Cannot codesign Alamofire (exit code 1)

[NickGaens]

Hello, I'm trying to integrate Alamofire into my Swift4 app, but when building the app, Xcode shows the following error.

PhaseScriptExecution [CP]\ Embed\ Pods\ Frameworks /Users/nickgaens/Library/Developer/Xcode/DerivedData/Emprova_Swift-bbvmoytlhlbqpueyftstselvwhdj/Build/Intermediates.noindex/Emprova\ Swift.build/Debug-iphonesimulator/Emprova\ GPS\ Swift.build/Script-AB9553D032B10870946A74DA.sh
    cd "/Users/nickgaens/Documents/Emprova iOS Swift"
    /bin/sh -c \"/Users/nickgaens/Library/Developer/Xcode/DerivedData/Emprova_Swift-bbvmoytlhlbqpueyftstselvwhdj/Build/Intermediates.noindex/Emprova\ Swift.build/Debug-iphonesimulator/Emprova\ GPS\ Swift.build/Script-AB9553D032B10870946A74DA.sh\"

mkdir -p /Users/nickgaens/Library/Developer/Xcode/DerivedData/Emprova_Swift-bbvmoytlhlbqpueyftstselvwhdj/Build/Products/Debug-iphonesimulator/Emprova GPS Swift.app/Frameworks
rsync -av --filter "- CVS/" --filter "- .svn/" --filter "- .git/" --filter "- .hg/" --filter "- Headers" --filter "- PrivateHeaders" --filter "- Modules" "/Users/nickgaens/Library/Developer/Xcode/DerivedData/Emprova_Swift-bbvmoytlhlbqpueyftstselvwhdj/Build/Products/Debug-iphonesimulator/Alamofire.framework" "/Users/nickgaens/Library/Developer/Xcode/DerivedData/Emprova_Swift-bbvmoytlhlbqpueyftstselvwhdj/Build/Products/Debug-iphonesimulator/Emprova GPS Swift.app/Frameworks"
building file list ... done

sent 94 bytes  received 20 bytes  228.00 bytes/sec
total size is 0  speedup is 0.00
Code Signing /Users/nickgaens/Library/Developer/Xcode/DerivedData/Emprova_Swift-bbvmoytlhlbqpueyftstselvwhdj/Build/Products/Debug-iphonesimulator/Emprova GPS Swift.app/Frameworks/Alamofire.framework with Identity -
/usr/bin/codesign --force --sign -  --preserve-metadata=identifier,entitlements '/Users/nickgaens/Library/Developer/Xcode/DerivedData/Emprova_Swift-bbvmoytlhlbqpueyftstselvwhdj/Build/Products/Debug-iphonesimulator/Emprova GPS Swift.app/Frameworks/Alamofire.framework'
/Users/nickgaens/Library/Developer/Xcode/DerivedData/Emprova_Swift-bbvmoytlhlbqpueyftstselvwhdj/Build/Products/Debug-iphonesimulator/Emprova GPS Swift.app/Frameworks/Alamofire.framework: bundle format unrecognized, invalid, or unsuitable
Command /bin/sh failed with exit code 1

I'm using Xcode 9.0 beta 2 (9M137d) with the Swift 4-version tied to it, Cocoapods 1.2.1 with Podfile:

platform :ios, '10.0'

target 'Emprova GPS Demo Swift' do
  use_frameworks!

  pod 'Alamofire', '~> 4.5.0'
  pod 'AlamofireNetworkActivityIndicator', '~> 2.2.0'
  pod 'KeyClip'
  pod 'Localize-Swift', '~> 1.7.1'
  pod 'FMDB'

end

target 'Emprova GPS Swift' do
  use_frameworks!

  pod 'Alamofire', '~> 4.5.0'
  pod 'AlamofireNetworkActivityIndicator', '~> 2.2.0'
  pod 'KeyClip'
  pod 'Localize-Swift', '~> 1.7.1'
  pod 'FMDB'

end

I have not touched any pod, so they're all in a default state.

[NickGaens]

I have created a StackOverflow question in regard to this issue. "Xcode 9 fails to build Swift 4 project with Alamofire pod" on StackOverflow

[NickGaens]

This was all because of having opened my project using the .xcodeproj entry instead of the .xcworkspace entry. I've added this information to the linked StackOverflow question as well.