我的Objective-C应用程序随机崩溃，并在堆栈跟踪中显示WebKit Legacy问题。你能否确定问题？
#0. Crashed: com.apple.main-thread
0 libobjc.A.dylib 0x18ecc8150 objc_msgSend + 16
1 WebKitLegacy 0x195fe0808 <redacted> + 132
2 CoreFoundation 0x190256d54 <redacted> + 404
3 CoreFoundation 0x190152d4c _CF_forwarding_prep_0 + 92
4 CoreFoundation 0x190258e80 <redacted> + 144
5 CoreFoundation 0x19014e2c4 <redacted> + 292
6 WebCore 0x194e28be8 <redacted> + 108
7 CoreFoundation 0x19020142c <redacted> + 24
8 CoreFoundation 0x190200d04 <redacted> + 388
9 CoreFoundation 0x1901fe9a8 <redacted> + 744
10 CoreFoundation 0x19012eda4 CFRunLoopRunSpecific + 424
11 UIFoundation 0x19632c134 <redacted> + 1764
12 Foundation 0x190d464cc <redacted> + 340
13 CoreFoundation 0x19020142c <redacted> + 24
14 CoreFoundation 0x190200d04 <redacted> + 388
15 CoreFoundation 0x1901fe9a8 <redacted> + 744
16 CoreFoundation 0x19012eda4 CFRunLoopRunSpecific + 424
17 GraphicsServices 0x191b98074 GSEventRunModal + 100
18 UIKit 0x1963e9058 UIApplicationMain + 208
19 NewsHog 0x1000d71a0 main (main.m:16)
20 libdyld.dylib 0x18f13d59c <redacted> + 4