# Le\_sim.api crush as soon as app start

**URL:** <https://mangoh.discourse.group/t/le-sim-api-crush-as-soon-as-app-start/2520>\
**Category:** mangOH Red\
**Created:** [April 2, 2019, 9:38am UTC](https://mangoh.discourse.group/t/le-sim-api-crush-as-soon-as-app-start/2520 "2019-04-02T09:38:52Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![artistmonkey](https://avatars.discourse-cdn.com/v4/letter/a/e95f7d/32.png) [@artistmonkey](https://mangoh.discourse.group/u/artistmonkey)\
**Post date:** [April 2, 2019, 9:38am UTC](https://mangoh.discourse.group/t/le-sim-api-crush-as-soon-as-app-start/2520/1 "2019-04-02T09:38:52Z")

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component.cdef  
requires:  
{  
api:  
{  
le\_sim.api  
}  
}  
sim.adef  
bindings:  
{  
sim.simComponent.le\_sim -\> modemService.le\_sim  
}  
when I start from terminal with “app start sim”  
result:  
Apr 2 09:32:09 | serviceDirectory[802]/serviceDirectory T=main | serviceDirectory.c DispatchToServer() 713 | Client (uid 0 ‘root’, pid 10745) disagrees with server (uid 0 ‘root’, pid 876) on protocol ID of service 'sim.simComponent.le\_s  
Apr 2 09:32:09 | _UNKNOWN_[10745]/framework T=main | LE\_FILENAME ReceiveSessionOpenResponse() 684 | Unexpected server response: -6 (LE\_FAULT).  
Can anyone please give me some advice? I’m using Developer Studio and made legato application for wp76xx. is it neet to get permission to access hardware path?