iOS ChatProvidersSDK crashes

Hello.

We see iOS ChatProvidersSDK crashes in our app.

Stack traces:

EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000000
Crashed: SwiftWebSocket
0 libswiftCore.dylib 0x2cf7ec swift_isUniquelyReferenced_nonNull_native + 10
1 ChatProvidersSDK 0x16258 specialized Dictionary._Variant.setValue(_:forKey:) + 4064 (<compiler-generated>:4064)
2 ChatProvidersSDK 0xcb914 specialized DataNode.addModelObserver<A, B>(_:type:_:) + 22028 (<compiler-generated>:22028)
3 ChatProvidersSDK 0x725d8 ChatConnection.obtainConnection() + 24236 (<compiler-generated>:24236)
4 ChatProvidersSDK 0x737a0 ChatConnection.connect() + 28788 (<compiler-generated>:28788)
5 ChatProvidersSDK 0xd188c specialized ChatRetryConnectionBehaviour.tryReconnect(in:completion:) + 163 (ChatRetryConnectionBehaviour.swift:163)
6 ChatProvidersSDK 0x72f40 closure #2 in ChatConnection.observeChatSocketConnection() + 26644 (<compiler-generated>:26644)
7 ChatProvidersSDK 0x227dc ChatSocketConnection.onStatusChange(status:) + 2312 (<compiler-generated>:2312)
8 ChatProvidersSDK 0x247ac partial apply for closure #2 in ChatSocketConnection.bindEvents() + 428 (<compiler-generated>:428)
9 ChatProvidersSDK 0x5d838 WebSocket.closeWebSocket() + 4472 (<compiler-generated>:4472)
10 ChatProvidersSDK 0x22ee4 ChatSocketConnection.disconnect() + 197 (ChatSocketConnection.swift:197)
11 ChatProvidersSDK 0x72990 ChatConnection.disconnect(reason:) + 25188 (<compiler-generated>:25188)
12 ChatProvidersSDK 0x730cc closure #3 in ChatConnection.observeChatSocketConnection() + 27040 (<compiler-generated>:27040)
13 ChatProvidersSDK 0x2286c closure #3 in ChatSocketConnection.bindEvents() + 2456 (<compiler-generated>:2456)
14 ChatProvidersSDK 0x5dab8 WebSocket.errorEvent(_:) + 5112 (<compiler-generated>:5112)
15 ChatProvidersSDK 0x5e01c partial apply for closure #3 in WebSocket.bindEvents() + 6492 (<compiler-generated>:6492)
16 ChatProvidersSDK 0xabcfc InnerWebSocket.step() + 11592 (<compiler-generated>:11592)
17 ChatProvidersSDK 0xb4020 closure #1 in Manager.init() + 1623 (SwiftWebSocket.swift:1623)
18 ChatProvidersSDK 0x4d05c thunk for @escaping @callee_guaranteed () -> () + 8836 (<compiler-generated>:8836)
19 libdispatch.dylib 0x5fa38 _dispatch_call_block_and_release + 24
20 libdispatch.dylib 0x607d4 _dispatch_client_callout + 16
21 libdispatch.dylib 0x9324 _dispatch_lane_serial_drain$VARIANT$mp + 592
22 libdispatch.dylib 0x9e40 _dispatch_lane_invoke$VARIANT$mp + 428
23 libdispatch.dylib 0x124ac _dispatch_workloop_worker_thread + 596
24 libsystem_pthread.dylib 0xc114 _pthread_wqthread + 304
25 libsystem_pthread.dylib 0xecd4 start_wqthread + 4

EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000000
Crashed: SwiftWebSocket
0  ChatProvidersSDK               0xd4734 specialized __RawDictionaryStorage.find<A>(_:) + 58412 (<compiler-generated>:58412)
1  ChatProvidersSDK               0x201e8 specialized Dictionary.removeValue(forKey:) + 44912
2  ChatProvidersSDK               0x1fbcc specialized closure #2 in Observable.addObserver<A>(_:identifier:eagerObserver:onRemove:_:) + 103 (Observer.swift:103)
3  ChatProvidersSDK               0x72b1c ChatConnection.unobserveConnection() + 125 (Observer.swift:125)
4  ChatProvidersSDK               0x729b4 ChatConnection.disconnect(reason:) + 104 (ChatConnection.swift:104)
5  ChatProvidersSDK               0x72f00 closure #2 in ChatConnection.observeChatSocketConnection() + 280 (ChatConnection.swift:280)
6  ChatProvidersSDK               0x227dc ChatSocketConnection.onStatusChange(status:) + 2312 (<compiler-generated>:2312)
7  ChatProvidersSDK               0x247ac partial apply for closure #2 in ChatSocketConnection.bindEvents() + 428 (<compiler-generated>:428)
8  ChatProvidersSDK               0x5d838 WebSocket.closeWebSocket() + 4472 (<compiler-generated>:4472)
9  ChatProvidersSDK               0x22ee4 ChatSocketConnection.disconnect() + 197 (ChatSocketConnection.swift:197)
10 ChatProvidersSDK               0x72990 ChatConnection.disconnect(reason:) + 25188 (<compiler-generated>:25188)
11 ChatProvidersSDK               0x730cc closure #3 in ChatConnection.observeChatSocketConnection() + 27040 (<compiler-generated>:27040)
12 ChatProvidersSDK               0x2286c closure #3 in ChatSocketConnection.bindEvents() + 2456 (<compiler-generated>:2456)
13 ChatProvidersSDK               0x5dab8 WebSocket.errorEvent(_:) + 5112 (<compiler-generated>:5112)
14 ChatProvidersSDK               0x5e01c partial apply for closure #3 in WebSocket.bindEvents() + 6492 (<compiler-generated>:6492)
15 ChatProvidersSDK               0xabcfc InnerWebSocket.step() + 11592 (<compiler-generated>:11592)
16 ChatProvidersSDK               0xb4020 closure #1 in Manager.init() + 1623 (SwiftWebSocket.swift:1623)
17 ChatProvidersSDK               0x4d05c thunk for @escaping @callee_guaranteed () -> () + 8836 (<compiler-generated>:8836)
18 libdispatch.dylib              0x5fa38 _dispatch_call_block_and_release + 24
19 libdispatch.dylib              0x607d4 _dispatch_client_callout + 16
20 libdispatch.dylib              0x9324 _dispatch_lane_serial_drain$VARIANT$mp + 592
21 libdispatch.dylib              0x9e40 _dispatch_lane_invoke$VARIANT$mp + 428
22 libdispatch.dylib              0x124ac _dispatch_workloop_worker_thread + 596
23 libsystem_pthread.dylib        0xc114 _pthread_wqthread + 304
24 libsystem_pthread.dylib        0xecd4 start_wqthread + 4

EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000000
Crashed: com.apple.root.default-qos.overcommit
0  libswiftCore.dylib             0x2cf7ec swift_isUniquelyReferenced_nonNull_native + 10
1  ChatProvidersSDK               0x16400 specialized Dictionary._Variant.setValue(_:forKey:) + 4488
2  ChatProvidersSDK               0x1dc1c specialized Observable.addObserver<A>(_:identifier:eagerObserver:onRemove:_:) + 35236 (<compiler-generated>:35236)
3  ChatProvidersSDK               0xcb734 specialized DataNode.addModelObserver<A, B>(_:type:_:) + 140 (DataNode.swift:140)
4  ChatProvidersSDK               0x725d8 ChatConnection.obtainConnection() + 24236 (<compiler-generated>:24236)
5  ChatProvidersSDK               0x737a0 ChatConnection.connect() + 28788 (<compiler-generated>:28788)
6  ChatProvidersSDK               0xd1578 closure #1 in ChatRetryConnectionBehaviour.startTimer(completion:) + 163 (ChatRetryConnectionBehaviour.swift:163)
7  ChatProvidersSDK               0x4d208 closure #1 in DispatchTimer.execute(_:) + 9264 (<compiler-generated>:9264)
8  ChatProvidersSDK               0x4d05c thunk for @escaping @callee_guaranteed () -> () + 8836 (<compiler-generated>:8836)
9  libdispatch.dylib              0x607d4 _dispatch_client_callout + 16
10 libdispatch.dylib              0x501c _dispatch_continuation_pop$VARIANT$mp + 412
11 libdispatch.dylib              0x14fa8 _dispatch_source_invoke$VARIANT$mp + 1308
12 libdispatch.dylib              0x11030 _dispatch_root_queue_drain + 372
13 libdispatch.dylib              0x118d4 _dispatch_worker_thread2 + 128
14 libsystem_pthread.dylib        0xc1b4 _pthread_wqthread + 464
15 libsystem_pthread.dylib        0xecd4 start_wqthread + 4

EXC_BREAKPOINT 0x00000001a88b9fd0
Crashed: com.apple.root.default-qos.overcommit
0  libdispatch.dylib              0x2fd0 _os_object_retain + 64
1  ChatProvidersSDK               0xd114c closure #1 in ChatRetryConnectionBehaviour.startTimer(completion:) + 46 (DispatchTimer.swift:46)
2  ChatProvidersSDK               0x4d208 closure #1 in DispatchTimer.execute(_:) + 9264 (<compiler-generated>:9264)
3  ChatProvidersSDK               0x4d05c thunk for @escaping @callee_guaranteed () -> () + 8836 (<compiler-generated>:8836)
4  libdispatch.dylib              0x481c _dispatch_client_callout + 20
5  libdispatch.dylib              0x7cf4 _dispatch_continuation_pop + 448
6  libdispatch.dylib              0x1a4b8 _dispatch_source_invoke + 1284
7  libdispatch.dylib              0x15fe0 _dispatch_root_queue_drain + 388
8  libdispatch.dylib              0x167d8 _dispatch_worker_thread2 + 112
9  libsystem_pthread.dylib        0x3768 _pthread_wqthread + 216
10 libsystem_pthread.dylib        0xa74c start_wqthread + 8

Any ideas how to fix this?

We are using ZendeskChatSDK v2.11.0