frame_get_one: libusb_bulk_transfer returned -7

[Qingzaiuuuu]

Hi! When I run test-viewer.py with Raspberrypi 4B the fisrt time, it runs well. But when i exit the program and restart it, the Terminal shows frame_get_one: libusb_bulk_transfer returned -7
. And I have to reboot the pi then it works.
I have also tried adding libusb_clear_halt(handle, 0x81); before res = libusb_bulk_transfer(handle, 0x81, &frame.m->rawdata[done], todo, &actual_length, 500);in seek.cpp and compiling again. But it didn't work.

[Qingzaiuuuu]

我重新安装了libusb sudo apt-get install libusb-1.0-0-dev 然后在seek.cpp 将#include <libusb.h> 改为 #include <libusb-1.0/libusb.h> 问题似乎得到了改善，只是偶尔会返回-7