Android_rpc app restart in autotuning

following Auto-tuning a Convolutional Network for ARM CPU — TVM 文档 (daobook.github.io) guide.and,android_rpc_test.py can run corrected. debug message showing

. also android_rpc.app restart many times , i guess someting wrong in tvm4j_runtime . so ,did anyone meet this problem? or what should i do?