OKta JWT verifier is

I am tried to protect my API on express.js. When I sent get request to protected api I got an error JWT cannot pe parsed. what i should do? I used access token from okta App Security → API

JWT verifiers are for verifying OIDC/OAuth Access and ID token issues by Okta Authorization Servers.

You only mention going to the Security → API section, but it is not possible to generate these tokens in the UI, so I’m not positive what your reproduction steps are.

How are you currently generating this token? Are you completing an OIDC/OAuth flow?