[VTA] Install and test Ultra96_v2 Error

I try to install vta and deploy bit file on ultra96 v2 but when I run: python test_benchmark_topi_conv2d.py I get follow error:

Conv2DWorkload(batch=1, height=56, width=56, in_filter=64, out_filter=64, hkernel=3, wkernel=3, hpad=1, wpad=1, hstride=1, wstride=1) Traceback (most recent call last): File “test_benchmark_topi_conv2d.py”, line 257, in test_conv2d(device=“vta”) File “test_benchmark_topi_conv2d.py”, line 253, in test_conv2d vta.testing.run(_run) File “/home/xx/tvm/vta/python/vta/testing/util.py”, line 75, in run run_func(env, remote) File “test_benchmark_topi_conv2d.py”, line 252, in _run run_conv2d(env, remote, wl, target) File “test_benchmark_topi_conv2d.py”, line 211, in run_conv2d cost = time_f(data_arr, kernel_arr, bias_arr, res_arr) File “/home/xx/tvm/python/tvm/runtime/module.py”, line 215, in evaluator blob = feval(args) File /home/xx/tvm/python/tvm/_ffi/_ctypes/packed_func.py", line 225, in call raise get_last_ffi_error() tvm._ffi.base.TVMError: Traceback (most recent call last): [bt] (7) /home/xx/tvm/build/libtvm.so(TVMFuncCall+0x65) [0x7f35af26c3b5] [bt] (6) /home/xx/tvm/build/libtvm.so(+0xe6fc03) [0x7f35af2dec03] [bt] (5) /home/xx/tvm/build/libtvm.so(tvm::runtime::RPCWrappedFunc::operator()(tvm::runtime::TVMArgs, tvm::runtime::TVMRetValue) const+0x3c5) [0x7f35af2e12d5] [bt] (4) /home/xx/tvm/build/libtvm.so(tvm::runtime::RPCClientSession::CallFunc(void*, TVMValue const*, int const*, int, std::function<void (tvm::runtime::TVMArgs)> const&)+0x57) [0x7f35af2d5507] [bt] (3) /home/xx/tvm/build/libtvm.so(tvm::runtime::RPCEndpoint::CallFunc(void*, TVMValue const*, int const*, int, std::function<void (tvm::runtime::TVMArgs)>)+0x215) [0x7f35af2ccf45] [bt] (2) /home/xx/tvm/build/libtvm.so(tvm::runtime::RPCEndpoint::HandleUntilReturnEvent(bool, std::function<void (tvm::runtime::TVMArgs)>)+0x267) [0x7f35af2cbfb7] [bt] (1) /home/xx/tvm/build/libtvm.so(tvm::runtime::SockChannel::Recv(void*, unsigned long)+0xae) [0x7f35af2f910e] [bt] (0) /home/xx/tvm/build/libtvm.so(+0xe7ef42) [0x7f35af2edf42] File “/home/xx/tvm/src/runtime/rpc/…/…/support/socket.h”, line 356 TVMError: Socket SockChannel::Recv Error:Interrupted system call

Anyone can help me to solve it?