A symbolicated crash report will show line numbers.
0 libobjc.A.dylib 0x000000010547400b objc_msgSend + 11
1 LPSimpleExample-cal 0x000000010327b6b5 -[LPCJSONSerializer serializeDictionary:error:] + 309 (LPCJSONSerializer.m:350)
2 LPSimpleExample-cal 0x000000010327a888 -[LPCJSONSerializer serializeObject:error:] + 664 (LPCJSONSerializer.m:121)
3 LPSimpleExample-cal 0x000000010327b4ab -[LPCJSONSerializer serializeArray:error:] + 203 (LPCJSONSerializer.m:317)
4 LPSimpleExample-cal 0x000000010327a809 -[LPCJSONSerializer serializeObject:error:] + 537 (LPCJSONSerializer.m:117)
5 LPSimpleExample-cal 0x000000010327b6b5 -[LPCJSONSerializer serializeDictionary:error:] + 309 (LPCJSONSerializer.m:350)
6 LPSimpleExample-cal 0x00000001032882b9 +[LPJSONUtils serializeDictionary:] + 89 (LPJSONUtils.m:38)
7 LPSimpleExample-cal 0x000000010326f275 -[LPGenericAsyncRoute readDataOfLength:] + 213 (LPGenericAsyncRoute.m:59)
8 LPSimpleExample-cal 0x0000000103254d79 -[LPHTTPConnection continueSendingStandardResponseBody] + 121 (LPHTTPConnection.m:1359)
9 LPSimpleExample-cal 0x00000001032580b7 __45-[LPHTTPConnection responseHasAvailableData:]_block_invoke + 199 (LPHTTPConnection.m:2508)
10 libdispatch.dylib 0x0000000105d81af6 _dispatch_call_block_and_release + 12
0 libsystem_kernel.dylib 0x0000000196972ce8 0x196958000 + 109800
1 libsystem_kernel.dylib 0x00000001969596f4 0x196958000 + 5876
2 CoreGraphics 0x0000000185cdee9c 0x185cd4000 + 44700
3 CoreGraphics 0x0000000185cdecd4 0x185cd4000 + 44244
4 UIKit 0x000000018a2551e0 0x18a238000 + 119264
5 UIKit 0x000000018a257778 0x18a238000 + 128888
6 UIKit 0x000000018a256ce4 0x18a238000 + 126180
7 UIKit 0x000000018a580e38 0x18a238000 + 3444280
8 UIKit 0x000000018a256708 0x18a238000 + 124680
9 UIKit 0x000000018a304a80 0x18a238000 + 838272
10 UIKit 0x000000018a252f80 0x18a238000 + 110464
11 UIKit 0x000000018a302200 0x18a238000 + 827904
12 UIKit 0x000000018a301a48 0x18a238000 + 825928
13 UIKit 0x000000018a2e6b00 0x18a238000 + 715520
14 UIKit 0x000000018a30151c 0x18a238000 + 824604
15 VoiceMemos 0x00000001000da7a8 0x1000d0000 + 42920