Download appDsyms archive from App Store
1.1 Login: https://appstoreconnect.apple.com
1.2 Go to: MyApps -> Choose your app -> Test Flight -> Select app version that is in the App Store -> Build Metadata -> Includes Symbols (right side) -> Press: Download dSYM.
Open terminal, drag and drop 3 files on terminal on this order:
2.1 drag an drop: "upload-symbols" which can be found in /project/Pods/FirebaseCrashlytics/upload-symbols
2.2 write " -gsp "
2.3 drag an drop: "GoogleService-Info.plist" which can be found in /project/GoogleService-Info.plist
2.4 write " -p ios "
2.5 drag an drop: "appDsyms" folder (unarchived, zip file might not work!) which usually is in Download folder /Users/username/Downloads/appDsyms
2.6 Press Enter
In terminal the complete command should include -gsp and -p ios, full command looks like this: 2.1 -gsp 2.3 -p ios 2.5
/project/Pods/FirebaseCrashlytics/upload-symbols -gsp /project/GoogleService-Info.plist -p ios /Users/username/Downloads/appDsyms