运行rockx的python脚本例程偶尔会出现错误

运行rockx的python的人脸识别脚本例程偶尔会出现如下错误，再次执行脚本就没事了，会是哪里的问题吗？
E RKNNAPI: __pthread_recv_msg,  recv(MsgHeader) fail, -9(ERROR_PIPE) < 108!
E RKNNAPI: rknn_init,  recv(MsgLoadAck) fail, -9(ERROR_PIPE) != 368!
1586310712803 rockx load_model(74): rknn_init fail! ret=-3

1586310712804 rockx init(74): init module(1) error -1
E NPUTransfer: Transfer interface open failed!, ret = -1
E RKNNAPI: rknn_init,  driver open fail!  ret = -1(ERROR_IO)!
1586310712833 rockx load_model(74): rknn_init fail! ret=-3

1586310712833 rockx init(74): init module(8) error -1
E NPUTransfer: Transfer interface open failed!, ret = -1
E RKNNAPI: rknn_init,  driver open fail!  ret = -1(ERROR_IO)!
1586310712957 rockx load_model(74): rknn_init fail! ret=-3

1586310712957 rockx init(74): init module(2) error -1
Segmentation fault