# SDK Demo Sample, SDK crashed during initialization ，SDK v4.6.15801.0403 **URL:** \ **Category:** Android\ **Created:** [April 15, 2020, 6:51am UTC](https://devforum.zoom.us/t/sdk-demo-sample-sdk-crashed-during-initialization-sdk-v4-6-15801-0403/13265 "2020-04-15T06:51:39Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![dlc396613](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/dlc396613/32/1393_2.png) [@dlc396613](https://devforum.zoom.us/u/dlc396613)\ **Post date:** [April 15, 2020, 6:51am UTC](https://devforum.zoom.us/t/sdk-demo-sample-sdk-crashed-during-initialization-sdk-v4-6-15801-0403/13265/1 "2020-04-15T06:51:39Z")
**Description** When I run the SDK Demo Sample, SDK crashed during initialization: JNI DETECTED ERROR IN APPLICATION: GetStringUTFChars received NULL jstring in call to GetStringUTFChars from int com.zipow.videobox.mainboard.Mainboard.initMainboard(java.lang.String, java.lang.String, byte, java.lang.String, int) “main” prio=5 tid=1 Runnable | group=“main” sCount=0 dsCount=0 flags=0 obj=0x734a3730 self=0x7f386c3a00 | sysTid=5859 nice=-10 cgrp=default sched=0/0 handle=0x7f3da2c9b0 | state=R schedstat=( 2901212602 289358090 1782 ) utm=261 stm=29 core=1 HZ=100 | stack=0x7fcee48000-0x7fcee4a000 stackSize=8MB | held mutexes= “mutator lock”(shared held) my device is: Brand: Teclast CPU: MT6797X Android:8.0.0 **Which version?** v4.6.15801.0403 ---
**Author:** ![vuzix\_greg](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/vuzix_greg/32/45663_2.png) [@vuzix\_greg](https://devforum.zoom.us/u/vuzix_greg)\ **Post date:** [April 15, 2020, 3:37pm UTC](https://devforum.zoom.us/t/sdk-demo-sample-sdk-crashed-during-initialization-sdk-v4-6-15801-0403/13265/3 "2020-04-15T15:37:38Z")
I’m seeing a very similar error when I call InMeetingEventHandlerImpl.setMeetingNamePassword(). But here’s the strange thing, this only happens in debug mode. If I build a release variant of my app, the error goes away. ``` 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] JNI DETECTED ERROR IN APPLICATION: GetStringUTFChars received null jstring 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] in call to GetStringUTFChars 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] from void com.zipow.videobox.confapp.ConfMgr.onUserInputPasswordImpl(java.lang.String, java.lang.String, boolean) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] "main" prio=5 tid=1 Runnable 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] | group="main" sCount=0 dsCount=0 obj=0x72b03000 self=0x42274520 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] | sysTid=9445 nice=0 cgrp=default sched=0/0 handle=0x40103bec 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] | state=R schedstat=( 1563161414 442447582 2827 ) utm=127 stm=29 core=3 HZ=100 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] | stack=0xbe09b000-0xbe09d000 stackSize=8MB 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] | held mutexes= "mutator lock"(shared held) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #00 pc 00004e84 /system/lib/libbacktrace_libc++.so (_ZN13UnwindCurrent6UnwindEjP8ucontext+23) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #01 pc 0000369d /system/lib/libbacktrace_libc++.so (_ZN9Backtrace6UnwindEjP8ucontext+8) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #02 pc 0024508d /system/lib/libart.so (_ZN3art15DumpNativeStackERNSt3__113basic_ostreamIcNS0_11char_traitsIcEEEEiPKcPNS_6mirror9ArtMethodE+68) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #03 pc 002294f5 /system/lib/libart.so (_ZNK3art6Thread4DumpERNSt3__113basic_ostreamIcNS1_11char_traitsIcEEEE+144) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #04 pc 000b2039 /system/lib/libart.so (_ZN3artL8JniAbortEPKcS1_+580) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #05 pc 000b277d /system/lib/libart.so (_ZN3art9JniAbortFEPKcS1_z+60) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #06 pc 000b40ed /system/lib/libart.so (_ZN3art11ScopedCheck13CheckInstanceENS0_12InstanceKindEP8_jobject+348) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #07 pc 000b4b65 /system/lib/libart.so (_ZN3art11ScopedCheck5CheckEbPKcz.constprop.129+724) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #08 pc 000bd743 /system/lib/libart.so (_ZN3art8CheckJNI17GetStringUTFCharsEP7_JNIEnvP8_jstringPh+42) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #09 pc 0001d705 /data/app/-2/lib/arm/libzVideoUI.so (Java_com_zipow_videobox_confapp_ConfMgr_onUserInputPasswordImpl+68) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] native: #10 pc 00565dab /data/dalvik-cache/arm/data@app@-2@base.apk@classes.dex (Java_com_zipow_videobox_confapp_ConfMgr_onUserInputPasswordImpl__Ljava_lang_String_2Ljava_lang_String_2Z+134) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] at com.zipow.videobox.confapp.ConfMgr.onUserInputPasswordImpl(Native method) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] at com.zipow.videobox.confapp.ConfMgr.onUserInputPassword(ConfMgr.java:587) 04-15 11:31:37.905 9445-9445/ A/art: art/runtime/check_jni.cc:65] at us.zoom.sdk.InMeetingEventHandlerImpl.setMeetingNamePassword(InMeetingEventHandlerImpl.java:12) ``` ---
**Author:** ![dlc396613](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/dlc396613/32/1393_2.png) [@dlc396613](https://devforum.zoom.us/u/dlc396613)\ **Post date:** [April 16, 2020, 6:02am UTC](https://devforum.zoom.us/t/sdk-demo-sample-sdk-crashed-during-initialization-sdk-v4-6-15801-0403/13265/4 "2020-04-16T06:02:39Z")
Thanks for the information！I will try it later~ ---
**Author:** ![dlc396613](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/dlc396613/32/1393_2.png) [@dlc396613](https://devforum.zoom.us/u/dlc396613)\ **Post date:** [April 16, 2020, 7:13am UTC](https://devforum.zoom.us/t/sdk-demo-sample-sdk-crashed-during-initialization-sdk-v4-6-15801-0403/13265/5 "2020-04-16T07:13:18Z")
Thanks a lot for the information provided, I solved it ---
**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\ **Post date:** [April 16, 2020, 7:35am UTC](https://devforum.zoom.us/t/sdk-demo-sample-sdk-crashed-during-initialization-sdk-v4-6-15801-0403/13265/6 "2020-04-16T07:35:21Z")
Hi [vuzix\_greg](https://devforum.zoom.us/u/vuzix_greg), Thanks for helping out and providing the workaround! Regarding the issue you are mentioning, we will enhance this part in the future release. Thanks! ---
**Author:** ![carson.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/carson.zoom/32/785_2.png) [@carson.zoom](https://devforum.zoom.us/u/carson.zoom)\ **Post date:** [April 16, 2020, 7:35am UTC](https://devforum.zoom.us/t/sdk-demo-sample-sdk-crashed-during-initialization-sdk-v4-6-15801-0403/13265/7 "2020-04-16T07:35:56Z")
Hi [dlc396613](https://devforum.zoom.us/u/dlc396613), Glad to hear that the problem has resolved. We will enhance this part in the future release. Happy Zooming! 🙂 ---
**Author:** ![DeveloperBot](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/developerbot/32/12632_2.png) [@DeveloperBot](https://devforum.zoom.us/u/DeveloperBot)\ **Post date:** [August 21, 2020, 8:31pm UTC](https://devforum.zoom.us/t/sdk-demo-sample-sdk-crashed-during-initialization-sdk-v4-6-15801-0403/13265/8 "2020-08-21T20:31:18Z")
Closed on August 21, 2020, 8:31pm UTC