[Android General] prototype74:
Your ROM can't register a native method:

[COLOR="Red"]09-04 14:44:14.898 3353 3353 E zygote : Failed to register native method android.net.TrafficStats.nativeGetUidRxBytesBuffered(I)J in /system/framework/framework.jar[/COLOR]
09-04 14:44:14.899 3353 3353 F zygote : jni_internal.cc:508] JNI FatalError called: RegisterNatives failed for 'android/net/TrafficStats'; aborting...
09-04 14:44:14.899 3353 3353 F zygote : runtime.cc:508] Runtime aborting...
09-04 14:44:14.899 3353 3353 F zygote : runtime.cc:508]
--------- beginning of crash
09-04 14:44:14.899 3353 3353 F libc : Fatal signal 6 (SIGABRT), code -6 in tid 3353 (main)
09-04 14:44:14.929 4289 4289 F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
09-04 14:44:14.929 4289 4289 F DEBUG : Build fingerprint: 'samsung/hero2ltexx/hero2lte:8.0.0/R16NW/G935FXXU2ERH1:user/release-keys'
09-04 14:44:14.929 4289 4289 F DEBUG : Revision: '9'
09-04 14:44:14.929 4289 4289 F DEBUG : ABI: 'arm'
09-04 14:44:14.929 4289 4289 F DEBUG : pid: 3353, tid: 3353, name: main >>> zygote <<<
09-04 14:44:14.929 4289 4289 F DEBUG : signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
09-04 14:44:14.931 4289 4289 F DEBUG : Abort message: 'jni_internal.cc:508] JNI FatalError called: RegisterNatives failed for 'android/net/TrafficStats'; aborting...'
09-04 14:44:14.931 4289 4289 F DEBUG : r0 00000000 r1 00000d19 r2 00000006 r3 00000008
09-04 14:44:14.931 4289 4289 F DEBUG : r4 00000d19 r5 00000d19 r6 ff81eee0 r7 0000010c
09-04 14:44:14.931 4289 4289 F DEBUG : r8 00000000 r9 e7ce214c sl 00000003 fp 000f4240
09-04 14:44:14.931 4289 4289 F DEBUG : ip 00000000 sp ff81eed0 lr e7de84c7 pc e7e19748 cpsr 200d0010
09-04 14:44:14.969 4289 4289 F DEBUG :
09-04 14:44:14.969 4289 4289 F DEBUG : backtrace:
09-04 14:44:14.969 4289 4289 F DEBUG : #00 pc 0004b748 /system/lib/libc.so (tgkill+12)
09-04 14:44:14.969 4289 4289 F DEBUG : #01 pc 0001a4c3 /system/lib/libc.so (abort+54)
09-04 14:44:14.969 4289 4289 F DEBUG : #02 pc 0033a063 /system/lib/libart.so (_ZN3art7Runtime5AbortEPKc+370)
09-04 14:44:14.969 4289 4289 F DEBUG : #03 pc 0033a65b /system/lib/libart.so (_ZN3art7Runtime7AborterEPKc+10)
09-04 14:44:14.969 4289 4289 F DEBUG : #04 pc 003f2231 /system/lib/libart.so (_ZN7android4base10LogMessageD1Ev+456)
09-04 14:44:14.969 4289 4289 F DEBUG : #05 pc 0025fa45 /system/lib/libart.so (_ZN3art3JNI10FatalErrorEP7_JNIEnvPKc+120)
09-04 14:44:14.969 4289 4289 F DEBUG : #06 pc 00002121 /system/lib/libnativehelper.so (jniRegisterNativeMethods+116)
09-04 14:44:14.969 4289 4289 F DEBUG : #07 pc 000e9e33 /system/lib/libandroid_runtime.so (_ZN7android33register_android_net_TrafficStatsEP7_JNIEnv+10)
09-04 14:44:14.969 4289 4289 F DEBUG : #08 pc 000a4e6d /system/lib/libandroid_runtime.so (_ZN7android14AndroidRuntime8startRegEP7_JNIEnv+68)
09-04 14:44:14.969 4289 4289 F DEBUG : #09 pc 000a4bab /system/lib/libandroid_runtime.so (_ZN7android14AndroidRuntime5startEPKcRKNS_6VectorINS_7String8EEEb+270)
09-04 14:44:14.969 4289 4289 F DEBUG : #10 pc 00001c63 /system/bin/app_process32 (main+1030)
09-04 14:44:14.969 4289 4289 F DEBUG : #11 pc 00017e45 /system/lib/libc.so (__libc_init+48)
09-04 14:44:14.969 4289 4289 F DEBUG : #12 pc 00001760 /system/bin/app_process32 (_start+100)

and system starts to abort runtime which results in bootloop.

Search for nativeGetUidRxBytesBuffered(I)J in TrafficStats.smali. If it's not there, copy the whole method from S7 Edge framework.jar (base ROM) to your ported ROM.