Pass the Authorization Header in Plsql_Rest_Sender_API

I’m trying to pass the bearer token in http_req_headers_ in APPS10.

Now, in application messages, I get this error:

Failure while obtaining result: java.lang.ArrayIndexOutOfBoundsException: 2 
Caused by: commonj.work.WorkException: java.lang.ArrayIndexOutOfBoundsException: 2 
Caused by: java.lang.ArrayIndexOutOfBoundsException: 2

The API call isn't even recorded in the Postman mock server. I assume it fails before reaching the mock server.
And I noticed I can randomly put any header other than “Authorization”

In the Routing Address, I tried the “None” method.

Guide me to solve this error please.