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之前一直都可以跑 但是固件烧写之后跑了 报这个错为什么 
 
E NPUTransfer: Transfer interface open failed!, ret = -1 
E RKNNAPI: rknn_init,  driver open fail!  ret = -1! 
1946252801 rockx load_model(74): rknn_init fail! ret=-3 
 
1946252801 rockx init(74): init module(5) error -1 
Traceback (most recent call last): 
  File "C:\Users\JJXR\AppData\Local\Temp\pip-install-uigsymqd\rockx\rockx\test\camera\rockx_object_detection.py", line 25, in <module> 
  File "C:\Users\JJXR\AppData\Roaming\Python\Python36\site-packages\rockx\RockX.py", line 186, in rockx_face_detect 
    ret, results = self.rockx_base.rockx_face_detect(in_img, width, height, pixel_fmt) 
  File "C:\Users\JJXR\AppData\Roaming\Python\Python36\site-packages\rockx\RockXBase.py", line 227, in rockx_face_detect 
    ret = RockXBase.lib.rockx_face_detect(self.handle, pointer(in_rockx_img), pointer(out_face_array), None) 
OSError: exception: access violation reading 0x0000000000000000 
[ WARN:0] global 
 
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