Hello,

I have just released an app that using ZendeskSDKMessaging. Using cocoapods to integrate:

pod 'ZendeskSDKMessaging', '2.2.3'

After few days integration, I could see one crash that effecting our crash free users. The crash report is came from Firebase Crashlytics, and the report as below:

Crashed: com.apple.NSURLSession-delegate

EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000000

Crashed: com.apple.NSURLSession-delegate
0 libswiftCore.dylib 0x3c97c8 swift_isUniquelyReferenced_nonNull_native + 38
1 ZendeskSDKConversationKit 0x8a018 _hidden#9866_ + 4319223832 (__hidden#447_:4319223832)
2 ZendeskSDKMessaging 0x70120 _hidden#8854_ + 202 (__hidden#7395_:202)
3 ZendeskSDKMessaging 0x702fc _hidden#8855_ + 4320920316 (__hidden#7395_:4320920316)
4 ZendeskSDKMessaging 0x70554 _hidden#8856_ + 4320920916 (__hidden#8918_:4320920916)
5 ZendeskSDKMessaging 0x95cf4 _hidden#11303_ + 4321074420 (__hidden#476_:4321074420)
6 ZendeskSDK 0x10c58 _hidden#1497_ + 149 (__hidden#1704_:149)
7 ZendeskSDK 0x14198 _hidden#1545_ + 4318429592 (__hidden#131_:4318429592)
8 ZendeskSDK 0xba40 _hidden#976_ + 68 (__hidden#1004_:68)
9 ZendeskSDKHTTPClient 0xa9c8 _hidden#480_ + 189 (__hidden#535_:189)
10 ZendeskSDKHTTPClient 0xaadc _hidden#482_ + 225 (__hidden#535_:225)
11 ZendeskSDKHTTPClient 0xac00 _hidden#483_ + 4320275456 (__hidden#66_:4320275456)
12 CFNetwork 0x22178 CFURLRequestSetMainDocumentURL + 3028
13 CFNetwork 0x33120 _CFNetworkErrorCopyLocalizedDescriptionWithHostname + 11444
14 libdispatch.dylib 0x2924 _dispatch_call_block_and_release + 32
15 libdispatch.dylib 0x4670 _dispatch_client_callout + 20
16 libdispatch.dylib 0xbdf4 _dispatch_lane_serial_drain + 672
17 libdispatch.dylib 0xc99c _dispatch_lane_invoke + 444
18 libdispatch.dylib 0x171b8 _dispatch_workloop_worker_thread + 656
19 libsystem_pthread.dylib 0x10f4 _pthread_wqthread + 288
20 libsystem_pthread.dylib 0xe94 start_wqthread + 8