Possible bug in new P4a opencv contrib build

[SonofPoseidon1982]

Hi there,

a recipe was contrived for the opencv extra classes for Python-for-android, but I have to tell you ... I have not got it working properly.. It basically crashes when detecting face landmarks (not when detecting faces).

I cannot get any useful debug stack traces apart from the following, which occurs IMMEDIATELY after I call the fit function:

  *--------- beginning of crash

06-05 18:23:34.580 8134 8162 F libc : /buildbot/src/android/ndk-release-r19/external/libcxx/../../external/libcxxabi/src/abort_message.cpp:73: abort_message: assertion "terminating with uncaught exception of type std::length_error: vector" failed
06-05 18:23:37.604 8134 8162 F libc : Fatal signal 6 (SIGABRT), code -6 in tid 8162 (SDLThread)
06-05 18:23:37.749 9203 9203 I AEE_AED : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
06-05 18:23:37.750 9203 9203 I AEE_AED : Build fingerprint: 'OUKITEL/U22/U22:7.0/NRD90M/1508468660:user/release-keys'
06-05 18:23:37.750 9203 9203 I AEE_AED : Revision: '0'
06-05 18:23:37.750 9203 9203 I AEE_AED : ABI: 'arm'
06-05 18:23:37.750 9203 9203 I AEE_AED : pid: 8134, tid: 8162, name: SDLThread >>> com.aniface.aface <<<
06-05 18:23:37.750 9203 9203 I AEE_AED : signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
06-05 18:23:37.762 9203 9203 I AEE_AED : Abort message: '/buildbot/src/android/ndk-release-r19/external/libcxx/../../external/libcxxabi/src/abort_message.cpp:73: abort_message: assertion "terminating with uncaught exception of type std::length_error: vector" failed'
06-05 18:23:37.762 9203 9203 I AEE_AED : r0 00000000 r1 00001fe2 r2 00000006 r3 00000008
06-05 18:23:37.763 9203 9203 I AEE_AED : r4 97425978 r5 00000006 r6 97425920 r7 0000010c
06-05 18:23:37.763 9203 9203 I AEE_AED : r8 960bfe49 r9 97422b28 sl fbd00bff fp 00000000
06-05 18:23:37.763 9203 9203 I AEE_AED : ip 00000000 sp 97422528 lr b158b7d7 pc b158e034 cpsr 200f0010
06-05 18:23:37.787 9203 9203 I AEE_AED :
06-05 18:23:37.787 9203 9203 I AEE_AED : backtrace:
06-05 18:23:37.787 9203 9203 I AEE_AED : #00 pc 0004b034 /system/lib/libc.so (tgkill+12)
06-05 18:23:37.787 9203 9203 I AEE_AED : #1 pc 000487d3 /system/lib/libc.so (pthread_kill+34)
06-05 18:23:37.787 9203 9203 I AEE_AED : #2 pc 0001d785 /system/lib/libc.so (raise+10)
06-05 18:23:37.787 9203 9203 I AEE_AED : #3 pc 000192c1 /system/lib/libc.so (__libc_android_abort+34)
06-05 18:23:37.787 9203 9203 I AEE_AED : #4 pc 00017034 /system/lib/libc.so (abort+4)
06-05 18:23:37.787 9203 9203 ...

I have tried changing the NDK version, the version of opencv, resizing the image... nothing works. It seems like it might be a linker error from what I can see, but I'm unsure. I have all the correction android permissions also.
My code is fine and all the directory roots are fine (I have tried everything I can think of).
cheers,