Firebase Crash symbol file: Unable to upload symbol file (reason unknown)

Question

I have compile error on Xcode 9, and error is Upload: Unable to upload symbol file (reason unknown).

Project compiles successfully on some computer, but

Answer 1

You need to make some changes in TARGETS -> Build Phases -> Run Scipt

replace upload-sym with upload-sym-util.bash in script

Like below

Happy to help :)

Answer 2

Use Firebase Crashlytics instead of Firebase Crash Reporting.

Answer 3

I have found how to avoid this issue. Clean project, delete all derived data and close Xcode. And then, please run below command on terminal.

$ rm $HOME/Library/Preferences/com.google.Symbol*

And open your project on Xcode and build again. Sometimes got same issue, but try above steps one or two times again. This will works for you most of time.