App crashes at [SBDGroupChannel getMember:]

I have noticed some crashes in Sendbird SDK. The stack trace is like this:

Crashed: com.apple.main-thread
EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x00005a6fe71ce550

Crashed: com.apple.main-thread
0  libobjc.A.dylib                0x1f28 objc_msgSend + 8
1  CoreFoundation                 0x17218 -[__NSDictionaryM objectForKeyedSubscript:] + 184
2  SendBirdSDK                    0xa874c -[SBDGroupChannel getMember:] + 2095 (SBDGroupChannel.m:2095)
3  SendBirdSDK                    0xf9410 -[SBDBaseMessage sender] + 611 (SBDBaseMessage.m:611)
4  App                            0x260ba0 sender.get + 28 (ChatMessage.swift:28)
5  App                            0xf7ff0 isFromCurrentSender + 253 (ChatDatasource.swift:253)
6  MessageKit                     0x35a04 messageBottomLabelAlignment + 240 (MessageSizeCalculator.swift:240)
7  MessageKit                     0x32c98 configure + 4328385688 (MessagesCollectionViewLayoutAttributes.swift:4328385688)
8  MessageKit                     0x41704 configure + 74 (TextMessageSizeCalculator.swift:74)
9  MessageKit                     0x2b850 layoutAttributesForElements + 124 (MessagesCollectionViewFlowLayout.swift:124)
10 MessageKit                     0x2bb8c layoutAttributesForElements + 4328356748 (<compiler-generated>:4328356748)
11 UIKitCore                      0x19cde4 __45-[UICollectionViewData validateLayoutInRect:]_block_invoke + 148
12 UIKitCore                      0x176df4 -[UICollectionViewData validateLayoutInRect:] + 1232
13 UIKitCore                      0x179a20 -[UICollectionView layoutSubviews] + 220
14 UIKitCore                      0x18bfb4 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2592
15 QuartzCore                     0x40cd0 CA::Layer::layout_if_needed(CA::Transaction*) + 532
16 QuartzCore                     0x33134 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 136
17 QuartzCore                     0x47a7c CA::Context::commit_transaction(CA::Transaction*, double, double*) + 452
18 QuartzCore                     0x50970 CA::Transaction::commit() + 704
19 QuartzCore                     0x3288c CA::Transaction::flush_as_runloop_observer(bool) + 88
20 CoreFoundation                 0x410c4 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 36
21 CoreFoundation                 0x10080 __CFRunLoopDoObservers + 592
22 CoreFoundation                 0xb13c __CFRunLoopRun + 1052
23 CoreFoundation                 0x1ebc8 CFRunLoopRunSpecific + 600
24 GraphicsServices               0x1374 GSEventRunModal + 164
25 UIKitCore                      0x514648 -[UIApplication _run] + 1100
26 UIKitCore                      0x295d90 UIApplicationMain + 364
27 App                            0x6168 main + 18 (WebViewController.swift:18)
28 ???                            0x100a15ce4 (Missing)

I am using the SendBirdSDK (3.0.238) & SendBirdSyncManager (1.1.41).
Can you please look into this?