Tip: Error: vault kv get invalid character - in numeric literal

Symptom:

When we use vault kv get to fetch CA from pki endpoint, we hit error

 $ vault kv get pki/ca/pem
Error reading pki/ca/pem: invalid character '-' in numeric literal

Workaround:

The proper way to fetch it is:

 $ vault kv get -field=certificate pki/ca/pem

or

$ vault read -field=certificate pki/ca/pem