after select the camera, can't open it

[nesux]

Any one have this same issue before, i compile and install the app all success ,but when select the camera to open it ,report can't open it.

2020-12-24 14:26:52.051 8342-8412/com.serenegiant.usbcameratest8 I/USBMonitor: name=/dev/bus/usb/001/003,desc=74,busnum=1,devnum=3,rawDesc=[B@cbe5455
2020-12-24 14:26:52.052 8342-8422/com.serenegiant.usbcameratest8 I/UVCCameraTextureView: RenderThread#updatePreviewSurface:
2020-12-24 14:26:52.066 8342-8415/com.serenegiant.usbcameratest8 I/libusb/core: [8415core.c:2085:libusb_init2]:libusb v1.0.19.10903
2020-12-24 14:26:52.066 8342-8415/com.serenegiant.usbcameratest8 I/libusb/usbfs: [8415android_usbfs.c:504:op_init2]:start up hotplug event handler
2020-12-24 14:26:52.066 8342-8415/com.serenegiant.usbcameratest8 I/libusb/usbfs: [8415android_usbfs.c:512:op_init2]:call android_scan_devices
2020-12-24 14:26:52.067 8342-8415/com.serenegiant.usbcameratest8 E/UVCCamera: [8415UVCCamera.cpp:172:connect]:could not open camera:err=-1