Crashlytics troubleshooting and FAQ

This page provides troubleshooting help and answers to frequently-asked questions about using Crashlytics. If you can't find what you're looking for or need additional help, contact Firebase support.

General troubleshooting/FAQ

dSYMs are missing/not uploading

To upload your project's dSYMs and get verbose output, check the following:

Make sure your project's build phase contains the Crashlytics run script, which allows Xcode to upload your project's dSYMs upon crashing (read Initializing Crashlytics for instructions on adding the script). After updating your project, force a crash to see if the script is working.
If you see a "Missing dSYM" alert in the Firebase console, check Xcode to make sure it's properly producing dSYMs for the build. Otherwise, it's likely the run script tool is getting stuck while uploading the dSYMs. In this case:
- Make sure you're using the latest version of Crashlytics.
- Enable Crashlytics debug logging by running the following command in Xcode:
```
-FIRDebugEnabled
```
- Try uploading the dSYMs one at a time, using the specific UUIDs.
- Remove any Icon files in the zip archive by running:
```
unzip appDsyms.zip
cd appDsyms rm -rf $(find . | grep Icon)
# Enumerate all the dSYMs
upload-symbols ... $(ls)
```
If the upload is still unsuccessful, contact Firebase Support and be sure to include your logs.

Integrations

App also uses the Google Mobile Ads SDK but not getting crashes

If your project uses Crashlytics alongside the Google Mobile Ads SDK, it's likely that the crash reporters are interfering when registering exception handlers. To fix the issue, turn off crash reporting in the Mobile Ads SDK by calling disableSDKCrashReporting.

Where is my BigQuery dataset located?

After you link Crashlytics to BigQuery, new datasets you create are automatically located in the United States, regardless of the location of your Firebase project.

Platform support

Can I use Crashlytics for macOS or tvOS?

You can implement Crashlytics in macOS or tvOS projects but the projects will not have access to metrics collected by Google Analytics (crash-free users, latest release, velocity alerts, and breadcrumbs), which will be excluded from your crash data.

Can I use Crashlytics in a Firebase project with multiple apps on different Apple platforms?

You can now report crashes for multiple apps in a single Firebase project, even when the apps are built for different Apple platforms (e.g., iOS, tvOS, and Mac Catalyst). Previously, you needed to separate the apps into individual Firebase projects if they contained the same bundle ID.