How resolve this error . please kindly let me know if anyone knows

Questions OAuth/OIDC
1

{“errorCode”:“invalid_client”,“errorSummary”:“A client_id must be provided in the request.”,“errorLink”:“invalid_client”,“errorId”:“oaeJRdw0ZkCSa-Th4eljHW7Dw”,“errorCauses”:}

2

Hello,
I assume this happening for the /authorize or /token call, but it could be others.
The following link documents the parameters the Okta OAuth2 endpoints require.