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iOS NSGenericException about startRunning #1057

@asaarnak

Description

@asaarnak

NSGenericException - *** -[AVCaptureMultiCamSession startRunning] startRunning may not be called between calls to beginConfiguration and commitConfiguration

Fatal Exception: NSGenericException
0  CoreFoundation                 0x11a0c0 __exceptionPreprocess
1  libobjc.A.dylib                0x31abc objc_exception_throw
2  AVFCapture                     0x1e6c4 -[AVCaptureSession startRunning]
3  AVFCapture                     0xafe04 -[AVCaptureMultiCamSession startRunning]
4  WebRTC                         0x1f0900 -[RTCCameraVideoCapturer startRunning] + 521 (RTCCameraVideoCapturer.m:521)
5  WebRTC                         0x1ef404 __78-[RTCCameraVideoCapturer startCaptureWithDevice:format:fps:completionHandler:]_block_invoke + 239 (RTCCameraVideoCapturer.m:239)
6  libdispatch.dylib              0x1aac _dispatch_call_block_and_release
7  libdispatch.dylib              0x1b584 _dispatch_client_callout
8  libdispatch.dylib              0xa2d0 _dispatch_lane_serial_drain
9  libdispatch.dylib              0xadac _dispatch_lane_invoke
10 libdispatch.dylib              0x151dc _dispatch_root_queue_drain_deferred_wlh
11 libdispatch.dylib              0x14a60 _dispatch_workloop_worker_thread
12 libsystem_pthread.dylib        0xa0c _pthread_wqthread
13 libsystem_pthread.dylib        0xaac start_wqthread

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