title: No such module 'FirebaseUI'
body: <p>I want to authenticate with FirebaseUI. Following <a href="https://firebase.google.com/docs/auth/ios/firebaseui?authuser=0" rel="nofollow noreferrer">https://firebase.google.com/docs/auth/ios/firebaseui?authuser=0</a>, I maked this program (Swift 4.1.2, Xcode 9.4.1).</p>
  
  <pre><code>import UIKit
  import FirebaseUI // No such module 'FirebaseUI'
  
  @UIApplicationMain
  class AppDelegate: UIResponder, UIApplicationDelegate {
      func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -&gt; Bool {
          FirebaseApp.configure()
          // ...
          return true
      }
  }
  </code></pre>
  
  <p>But compile error <code>No such module 'FirebaseUI'</code> has occured.</p>
  
  <p><strong>This is my Podfile.</strong></p>
  
  <pre><code>target 'MyApp' do
    use_frameworks!
    pod 'FirebaseUI'
  
    target 'MyAppTests' do
      inherit! :search_paths
    end
  
    target 'MyAppUITests' do
      inherit! :search_paths
    end
  end
  </code></pre>
  
  <p><strong>This is my Podfile.lock.</strong></p>
  
  <pre><code>PODS:
    - Bolts (1.9.0):
      - Bolts/AppLinks (= 1.9.0)
      - Bolts/Tasks (= 1.9.0)
    - Bolts/AppLinks (1.9.0):
      - Bolts/Tasks
    - Bolts/Tasks (1.9.0)
    - BoringSSL (10.0.6):
      - BoringSSL/Implementation (= 10.0.6)
      - BoringSSL/Interface (= 10.0.6)
    - BoringSSL/Implementation (10.0.6):
      - BoringSSL/Interface (= 10.0.6)
    - BoringSSL/Interface (10.0.6)
    - FBSDKCoreKit (4.36.0):
      - Bolts (~&gt; 1.7)
    - FBSDKLoginKit (4.36.0):
      - FBSDKCoreKit
    - Firebase/Auth (5.7.0):
      - Firebase/CoreOnly
      - FirebaseAuth (= 5.0.3)
    - Firebase/CoreOnly (5.7.0):
      - FirebaseCore (= 5.1.2)
    - Firebase/Database (5.7.0):
      - Firebase/CoreOnly
      - FirebaseDatabase (= 5.0.2)
    - Firebase/Firestore (5.7.0):
      - Firebase/CoreOnly
      - FirebaseFirestore (= 0.13.2)
    - Firebase/Storage (5.7.0):
      - Firebase/CoreOnly
      - FirebaseStorage (= 3.0.1)
    - FirebaseAuth (5.0.3):
      - FirebaseAuthInterop (~&gt; 1.0)
      - FirebaseCore (~&gt; 5.0)
      - GoogleUtilities/Environment (~&gt; 5.2)
      - GTMSessionFetcher/Core (~&gt; 1.1)
    - FirebaseAuthInterop (1.0.0)
    - FirebaseCore (5.1.2):
      - GoogleUtilities/Logger (~&gt; 5.2)
    - FirebaseDatabase (5.0.2):
      - FirebaseCore (~&gt; 5.0)
      - leveldb-library (~&gt; 1.18)
    - FirebaseFirestore (0.13.2):
      - FirebaseAuthInterop (~&gt; 1.0)
      - FirebaseCore (~&gt; 5.0)
      - FirebaseFirestore/abseil-cpp (= 0.13.2)
      - gRPC-ProtoRPC (~&gt; 1.0)
      - leveldb-library (~&gt; 1.18)
      - nanopb (~&gt; 0.3.8)
      - Protobuf (~&gt; 3.1)
    - FirebaseFirestore/abseil-cpp (0.13.2):
      - FirebaseAuthInterop (~&gt; 1.0)
      - FirebaseCore (~&gt; 5.0)
      - gRPC-ProtoRPC (~&gt; 1.0)
      - leveldb-library (~&gt; 1.18)
      - nanopb (~&gt; 0.3.8)
      - Protobuf (~&gt; 3.1)
    - FirebaseStorage (3.0.1):
      - FirebaseCore (~&gt; 5.0)
      - GTMSessionFetcher/Core (~&gt; 1.1)
    - FirebaseUI (5.2.1):
      - FirebaseUI/Anonymous (= 5.2.1)
      - FirebaseUI/Auth (= 5.2.1)
      - FirebaseUI/Database (= 5.2.1)
      - FirebaseUI/Facebook (= 5.2.1)
      - FirebaseUI/Firestore (= 5.2.1)
      - FirebaseUI/Google (= 5.2.1)
      - FirebaseUI/Phone (= 5.2.1)
      - FirebaseUI/Storage (= 5.2.1)
      - FirebaseUI/Twitter (= 5.2.1)
    - FirebaseUI/Anonymous (5.2.1):
      - FirebaseUI/Auth
    - FirebaseUI/Auth (5.2.1):
      - Firebase/Auth (~&gt; 5.0)
    - FirebaseUI/Database (5.2.1):
      - Firebase/Database (~&gt; 5.0)
    - FirebaseUI/Facebook (5.2.1):
      - FBSDKLoginKit (~&gt; 4.0)
      - FirebaseUI/Auth
    - FirebaseUI/Firestore (5.2.1):
      - Firebase/Firestore
    - FirebaseUI/Google (5.2.1):
      - FirebaseUI/Auth
      - GoogleSignIn (~&gt; 4.0)
    - FirebaseUI/Phone (5.2.1):
      - FirebaseUI/Auth
    - FirebaseUI/Storage (5.2.1):
      - Firebase/Storage (~&gt; 5.0)
      - SDWebImage (~&gt; 4.0)
    - FirebaseUI/Twitter (5.2.1):
      - FirebaseUI/Auth
      - TwitterKit (~&gt; 3.0)
    - GoogleSignIn (4.2.0):
      - "GoogleToolboxForMac/NSDictionary+URLArguments (~&gt; 2.1)"
      - "GoogleToolboxForMac/NSString+URLArguments (~&gt; 2.1)"
      - GTMOAuth2 (~&gt; 1.0)
      - GTMSessionFetcher/Core (~&gt; 1.1)
    - GoogleToolboxForMac/DebugUtils (2.1.4):
      - GoogleToolboxForMac/Defines (= 2.1.4)
    - GoogleToolboxForMac/Defines (2.1.4)
    - "GoogleToolboxForMac/NSDictionary+URLArguments (2.1.4)":
      - GoogleToolboxForMac/DebugUtils (= 2.1.4)
      - GoogleToolboxForMac/Defines (= 2.1.4)
      - "GoogleToolboxForMac/NSString+URLArguments (= 2.1.4)"
    - "GoogleToolboxForMac/NSString+URLArguments (2.1.4)"
    - GoogleUtilities/Environment (5.2.3)
    - GoogleUtilities/Logger (5.2.3):
      - GoogleUtilities/Environment
    - gRPC (1.14.1):
      - gRPC-RxLibrary (= 1.14.1)
      - gRPC/Main (= 1.14.1)
    - gRPC-Core (1.14.1):
      - gRPC-Core/Implementation (= 1.14.1)
      - gRPC-Core/Interface (= 1.14.1)
    - gRPC-Core/Implementation (1.14.1):
      - BoringSSL (~&gt; 10.0)
      - gRPC-Core/Interface (= 1.14.1)
      - nanopb (~&gt; 0.3)
    - gRPC-Core/Interface (1.14.1)
    - gRPC-ProtoRPC (1.14.1):
      - gRPC-ProtoRPC/Main (= 1.14.1)
    - gRPC-ProtoRPC/Main (1.14.1):
      - gRPC (= 1.14.1)
      - gRPC-RxLibrary (= 1.14.1)
      - Protobuf (~&gt; 3.0)
    - gRPC-RxLibrary (1.14.1)
    - gRPC/Main (1.14.1):
      - gRPC-Core (= 1.14.1)
      - gRPC-RxLibrary (= 1.14.1)
    - GTMOAuth2 (1.1.6):
      - GTMSessionFetcher (~&gt; 1.1)
    - GTMSessionFetcher (1.2.0):
      - GTMSessionFetcher/Full (= 1.2.0)
    - GTMSessionFetcher/Core (1.2.0)
    - GTMSessionFetcher/Full (1.2.0):
      - GTMSessionFetcher/Core (= 1.2.0)
    - leveldb-library (1.20)
    - nanopb (0.3.8):
      - nanopb/decode (= 0.3.8)
      - nanopb/encode (= 0.3.8)
    - nanopb/decode (0.3.8)
    - nanopb/encode (0.3.8)
    - Protobuf (3.6.1)
    - SDWebImage (4.4.2):
      - SDWebImage/Core (= 4.4.2)
    - SDWebImage/Core (4.4.2)
    - TwitterCore (3.2.0)
    - TwitterKit (3.4.0):
      - TwitterCore (&gt;= 3.1.0)
  
  DEPENDENCIES:
    - FirebaseUI
  ...
  COCOAPODS: 1.5.3
  </code></pre>
  
  <p>Please tell me how to resolve this compile error. Thanks in advance.</p>
  
  <p><strong>NOTE:</strong></p>
  
  <p>I tried following solutions. However, they didn't work.</p>
  
  <ul>
  <li>Product > Clean </li>
  <li>execute <code>pod repo update</code>, then <code>pod update</code></li>
  </ul>