Not sure this will be much help, but here is the top part of the exception stack:
0 CoreFoundation 0x000000019c65ead0 <redacted> + 256
1 libobjc.A.dylib 0x000000019b863d00 objc_exception_throw + 60
2 CoreFoundation 0x000000019c57c4d4 <redacted> + 0
3 CoreFoundation 0x000000019c664464 <redacted> + 1412
4 CoreFoundation 0x000000019c666260 _CF_forwarding_prep_0 + 96
5 espresso 0x0000000102d58978 +[InAppBrowserConfig(DisplayOptionsStruct) fromDisplayOptions:] + 356
6 espresso 0x0000000102d54c6c _ShowURLWithDisplayOptions + 120
7 espresso 0x0000000102d54e74 _OpenInAppBrowser + 104
8 espresso 0x0000000102d686b4 iOSInAppBrowser__OpenInAppBrowser_mC93248E1F49443BED3C3D03A7C55783E7EAFE0C4 + 108
9 espresso 0x0000000102d67064 CliveWebBrowserScript_Awake_mC890CB4E232C63AD0AA251991D4ECD40F2EEB86A + 132
10 espresso 0x000000010240ae50