Error: could not parse transit key keys data as map[string]interface{}

[k0s15]

When I tried to connect my private hashivault to get public-key, I hit below issue.
There is no much information in this error.
What can I check for debugging?

cosign public-key --key hashivault://cosign -d
Error: could not parse transit key keys data as map[string]interface{}
main.go:74: error during command execution: could not parse transit key keys data as map[string]interface{}