We are getting roughly 255 crashes in production with 97% of users on iOS 13, the remaining 3% are on iOS 12. Utilizing all the latest Firebase pods versions.

• Xcode version: 11.0
• Firebase SDK version: 6.9.0
• Firebase Component: Core
• Component version: Core (6.9.0), RemoteConfig (4.4.1)

Crash log & relevant backtrace:

Crashed: com.google.GoogleConfigService.FIRRemoteConfig
0 (Missing) 0x1bd61ff34 (Missing)
1 (Missing) 0x1bd61fad8 (Missing)
2 (Missing) 0x1bd61fad8 (Missing)
3 Griddy 0x104971b38 -[FIRRemoteConfig configValueForKey:namespace:] + 378 (FIRRemoteConfig.m:378)
4 Griddy 0x104912354 -[FPRRemoteConfigFlags sessionSamplingRate] + 4301972308
5 Griddy 0x1049119b4 -[FPRConfigurations sessionsSamplingPercentage] + 4301969844
6 Griddy 0x10490c8b4 -[FPRSessionManager isGaugeCollectionEnabledForSessionId:] + 4301949108
7 Griddy 0x10490c764 -[FPRSessionManager updateSessionId:] + 4301948772
8 Griddy 0x10490c4cc -[FPRSessionManager initWithNotificationCenter:] + 4301948108
9 Griddy 0x10490c428 __35+[FPRSessionManager sharedInstance]_block_invoke + 4301947944
10 (Missing) 0x1bd6717d4 (Missing)
11 (Missing) 0x1bd614eb8 (Missing)
12 Griddy 0x10490c3cc +[FPRSessionManager sharedInstance] + 4301947852
13 Griddy 0x10491ce20 -[FPRNetworkTrace start] + 4302016032
14 Griddy 0x104923e50 __InstrumentDataTaskWithRequestCompletionHandler_block_invoke + 4302044752
15 Griddy 0x104923dcc __InstrumentDataTaskWithRequestCompletionHandler_block_invoke + 4302044620
16 Griddy 0x1048fc7c4 -[FIRInstanceIDCheckinService checkinWithExistingCheckin:completion:] + 189 (FIRInstanceIDCheckinService.m:189)
17 Griddy 0x1048f9f30 -[FIRInstanceIDAuthService fetchCheckinInfoWithHandler:] + 188 (FIRInstanceIDAuthService.m:188)
18 Griddy 0x1048f329c -[FIRInstanceID tokenWithAuthorizedEntity:scope:options:handler:] + 368 (FIRInstanceID.m:368)
19 Griddy 0x10497fc64 -[RCNConfigFetch refreshInstanceIDTokenAndFetchCheckInInfoWithCompletionHandler:] + 230 (RCNFetch.m:230)
20 Griddy 0x10497f8c8 __74-[RCNConfigFetch fetchAllConfigsWithExpirationDuration:completionHandler:]_block_invoke + 190 (RCNFetch.m:190)
21 (Missing) 0x1bd670a38 (Missing)
22 (Missing) 0x1bd6717d4 (Missing)
23 (Missing) 0x1bd61a324 (Missing)
24 (Missing) 0x1bd61ae40 (Missing)
25 (Missing) 0x1bd6234ac (Missing)
26 (Missing) 0x1bd852114 (Missing)
27 (Missing) 0x1bd854cd4 (Missing)