PSA: If a bunch of apps on your phone didn't work this evening, it's because Firebase shipped a server side bug that crashed their SDK.
github.com
[Analytics] Crash after sdk-exp response: -[__NSDictionaryM setObject:forKeyedSubscript:]: key cannot be nil (since 2026-09-29 00:41 UTC) · Issue #16728 · firebase/firebase-ios-sdk
Description Since 2026-09-29 00:41 UTC, our production iOS app has been crashing at a growing rate (56 crashes / 56 users in the first 18 minutes). We have not shipped an update. The crash started ...