The tvmc tune command runs all the time without any output

In the TVM tutorial, I encountered a problem. I automatically tune resnet50-v2-7. onnx and run the command tvmc tune -- target "llvm" -- input shapes "data: [1,3224224]" -- output resnet50-v2-7-autotuner_ records. Json resnet50-v2-7.onnx.The command is running all the time, but there is no output, as shown in the following figure.

How can I solve this problem?