Unrecognized sample profile encoding format

After I use create_llvm_prof to read perf.data and the binary file ./code, I get the profile data in code.prof. However, when I build the code again using the collected profile, I got an error:

`./code.prof: Could not open profile: Unrecognized sample profile encoding format`

I think there is something wrong with my code.prof. What may cause this failure?

Also, the generation of code.prof also emit some errors.
```
E20221114 17:06:22.664913 92878 sample_reader.cc:280] No buildid found in binary
W20221114 17:06:22.676327 92878 profile.cc:102] use_lbr was enabled but range_count_map was empty!
W20221115 11:12:29.006178 69856 llvm_profile_writer.cc:46] Got an empty profile map. The output file might still be not empty (e.g., containing symbol list in binary format) but might be not helpful as a profile
```

Are the any connections between these errors?