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Why don’t have diamond?

### 🛠️ Crash Analysis Report **App Name:** StealthMaster **Bundle ID:** io.highcore.stealthmaster **App Version:** 1.12.44 (Build 248) **OS Version:** iOS / iPadOS 26.4 (Build 23E244) **Device Model:** iPad15,3 **Crash Timestamp:** 2026-08-05 11:47:19 +0800 #### 1. Issue Summary * **Exception Type:** EXC_CRASH (SIGABRT) * **Exception Name:** NSInvalidArgumentException * **Triggering Thread:** Thread 18 * **Exception Message:** ```text -[<dynamic class> productsRequest:didReceiveResponse:]: unrecognized selector sent to instance 0x1514a6be0 ``` #### 2. Root Cause Analysis The crash occurred during an In-App Purchase (StoreKit) request flow. When the SKProductsRequest received a response from Apple servers, it attempted to invoke the delegate method productsRequest:didReceiveResponse: on its assigned delegate object. However, the delegate instance at address 0x1514a6be0 does not implement this selector (or the delegate pointer was set to an incorrect object / dangling reference), resulting in an unrecognized selector runtime exception. #### 3. Stack Trace Excerpt ```text 0 CoreFoundation ___exceptionPreprocess + 164 1 libobjc.A.dylib objc_exception_throw + 88 2 CoreFoundation -[NSObject(NSObject) doesNotRecognizeSelector:] + 144 3 CoreFoundation ___forwarding___ + 1588 4 CoreFoundation _CF_forwarding_prep_0 + 96 5 StoreKit -[SKProductsRequest _handleStatus:] + 120 ... ``` #### 4. Action Items / Recommendations for Fix 1. **Verify SKProductsRequestDelegate Implementation:** * Ensure that the object assigned as request.delegate conforms to SKProductsRequestDelegate and explicitly implements: ```objc - (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response; ``` 2. **Check Delegate Lifecycle & Ownership:** * Check if the delegate object is being deallocated prematurely or if a non-delegate object is accidentally being assigned as the delegate for SKProductsRequest. 3. **Defensive Check:** * Before setting or invoking delegate callbacks, verify the object's class type or check [delegate respondsToSelector:] to prevent unrecognized selector crashes.