Overall: I tried to build BERT model with Cloudbuild and Cloudrun. I saved the model (parameter) and metadata (labels) at the GCP Cloud Storage. But, I encountered the error from load metadata.bin file by joblib.load(). My metadata.bin file contained UTF-8 characters but joblib.load expected ASCII characters. And default protocol is 4 in my version, but the error messages indicates the protocol was 0.