# Get NULLPOINTER on already init app **URL:** \ **Category:** Meeting SDK\ **Created:** [September 10, 2021, 2:04am UTC](https://devforum.zoom.us/t/get-nullpointer-on-already-init-app/57207 "2021-09-10T02:04:29Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![shpy2001](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/shpy2001/32/3536_2.png) [@shpy2001](https://devforum.zoom.us/u/shpy2001)\ **Post date:** [September 10, 2021, 2:04am UTC](https://devforum.zoom.us/t/get-nullpointer-on-already-init-app/57207/1 "2021-09-10T02:04:29Z")
**Description** App start from clean. Ini SDK and using ok. Next day, many user get error ZOOM\_API\_ERROR\_FAILED\_NULLPOINTER when start using Zoom. Have check if Zoom already initialized , do not init. User try to kill app and start. So, Zoom init. Still get ZOOM\_API\_ERROR\_FAILED\_NULLPOINTER . User restart device then error gone for next day. SDK init by new jwt with: exp = tokenexp = iat + 3600 **Which Mobile Meeting SDK version?** ios : 5.5.12511 android: 5.5.1.1319 ---
**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\ **Post date:** [September 13, 2021, 6:23pm UTC](https://devforum.zoom.us/t/get-nullpointer-on-already-init-app/57207/2 "2021-09-13T18:23:13Z")
Hey @shpy2001, Thanks for using the dev forum! Can you let us know if you start seeing this issue again? Thanks! Michael ---
**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\ **Post date:** [October 14, 2021, 4:23am UTC](https://devforum.zoom.us/t/get-nullpointer-on-already-init-app/57207/3 "2021-10-14T04:23:45Z")
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