I have a request lambda authoriser but when making an http post request to the connection that I created, I realise that the authoriser is not called and it still asks for attaching oauthorization as you can see in the screenshot

here is my function and I need to mention that the identitysource is working fine:

const customAuthorizer = createAuthorizer(scope, "ConnectionsAuth", {
  apiId: httpApi.attrApiId,
  name: "connectionsauth",
  authorizerType: "REQUEST",
  authorizerUri:  `arn:aws:apigateway:eu-west-1:lambda:path/2015-03-31/functions/${props.authorizerArn}/invocations`,
  authorizerResultTtlInSeconds: 120,    
  identitySource: ["$request.header.Authorization"],
  authorizerPayloadFormatVersion: "2.0"
}}