'GoogleUtilities/GULAppEnvironmentUtil.h' file not found

Question

Trying to compile my project after adding some pods. While compiling it gives below error

'GoogleUtilities/GULAppEnvironmentUtil.h' file not found

Podfile.lock snippet

- FirebaseCore (5.1.1):
        - GoogleUtilities/Logger (~> 5.2)
      - FirebaseDynamicLinks (3.0.2):
        - FirebaseAnalytics (~> 5.1)
      - FirebaseInAppMessaging (0.11.0):
        - FirebaseAnalytics (~> 5.1)
        - FirebaseCore (~> 5.1)
        - FirebaseInstanceID (~> 3.2)
        - GoogleUtilities/Environment (~> 5.0)
      - FirebaseInstanceID (3.2.1):
        - FirebaseCore (~> 5.1)
        - GoogleUtilities/Environment (~> 5.2)
      - FirebaseMessaging (3.1.0):
        - FirebaseCore (~> 5.0)
        - FirebaseInstanceID (~> 3.0)
        - GoogleUtilities/Reachability (~> 5.2)
        - Protobuf (~> 3.1)
      - FirebaseRemoteConfig (3.0.1):
        - FirebaseABTesting (~> 2.0)
        - FirebaseAnalytics (~> 5.1)
        - FirebaseCore (~> 5.1)
        - FirebaseInstanceID (~> 3.2)
        - GoogleUtilities/Environment (~> 5.2)
        - "GoogleUtilities/NSData+zlib (~> 5.2)"
        - Protobuf (~> 3.5)
      - Google/Analytics (2.0.4):
        - Google/Core
        - GoogleAnalytics (~> 3.12)
      - Google/Core (2.0.4):
        - GoogleInterchangeUtilities (~> 1.0)
        - GoogleNetworkingUtilities (~> 1.0)
        - GoogleSymbolUtilities (~> 1.0)
        - GoogleUtilities (~> 1.1)

Answer 1

In the Podfile, change Google/Analytics to GoogleAnalytics. The Google pod is deprecated and not compatible with recent Firebase versions.

An alternative, but not recommended workaround, could be to lock the Firebase version to something less than 5.5.

UPDATE: June 2021: There is a Crashlytics podspec bug that can also cause this issue. The workaround is to explicitly add GoogleUtilities/Environment to the Podfile or move use_frameworks! to the top of the Podfile. Details in https://github.com/firebase/firebase-ios-sdk/issues/8137. The issue will be fixed in the upcoming Firebase 8.3.0 release.

Answer 2

Problem fixed for me by following steps:

1. Clean the project
2. Close the Xcode
3. Delete derived data
4. If you have already installed the POD, kindly delete the “.xcworkspace” & “Podfile.lock” files
5. Install pod again
6. Open “.xcworkspace” and Run

Answer 3

Running pod update fixed this for me